However, nothing is definitively known about the motivation behind this mass shooting, he told reporters at the White House on Sunday afternoon.
Indian celebrities and designers are ruling the show on the red carpet.
In a statement, the Hindu American Foundation said: "Never before had a sitting US President personally celebrated the Diwali holiday, and with that one gesture, two million Hindu-Americans felt a bit more like they belonged -- one more reason to feel at home."
McCain, who lost to Obama in the 2008 presidential election, made the comment while Obama was in Orlando visiting with the families of those killed in Sunday's attack.
United States President Barack Obama on Thursday announced to nominate senior American diplomat Derek J Mitchell as his new Ambassador to Myanmar.
United States President Donald Trump and US First Lady Melania Trump will be visiting India -- Ahmedabad and Delhi -- on February 24 and 25 on the invitation of Prime Minister Narendra Modi. Let's assess earlier American presidential visits to India.
US President Barack Obama has nominated Indian-American lawyer and telecom policy expert Ajit Varadaraj Pai, who belongs to Republican party, as Commissioner of the Federal Communications Commission (FCC), the country's premier regulatory body.
Karthick Ramakrishnan, co-author and director of the National Asian American Survey believes the Indian American community's massive shift to the Democratic Party -- which was manifest in the polling data that showed overwhelming support for President Barack Obama over Republican presidential nominee Mitt Romney
This Sunday morning the American President will find himself in Mumbai. Rediff.com's Vaihayasi Pande Daniel visits the Mumbai churches where America's leader and First Lady can pray.
The elaborate and lavish White House state dinner hosted for Prime Minister Manmohan Singh by United States President Barack Obama in November, and the caliber of guests invited, was in part to acknowledge the extraordinary impact of Indian Americans in the US in every field of endeavour, House Majority Leader Steny Hoyer has said.
Even almost two years after the world's most wanted terrorist was slain by American special forces, President Barack Obama's administration is refusing to release photos of Osama bin Laden's body, warning that this would risk "grave damage" to national security.
Here are the pictures of Priyanka Chopra and other celebrities at the White House correspondent dinner...
In what can be seen as a rare occasion, the Situation Room -- which is mainly used to discuss national security issues -- was opened to corporate CEOs, indicating the importance given to the issue by Obama.
More and more Americans believe that the Afghanistan war is not worth fighting for, and that US President Barack Obama has done a poor job of handling the conflict with the Taliban.
America's first lady Michelle Obama broke a royal protocol when she placed her arm around Queen Elizabeth II during a formal reception at the Buckingham Palace. But much to the surprise of onlookers the Queen returned the gesture by putting her arm round first lady's waist.
Yet another young Indian American Democratic Party activist has been named for United States President-elect Barack Obama's transition team.Parag Mehta, 31, has been named the deputy director of inter-governmental affairs and public liaison of the Obama-Biden transition team, charged with outreach to Asian Americans and Pacific Islanders and other minority groups.His appointment follows close on the heels of the appointments of two Indian Americans.
The book shares the story of the woman Sheila Miyoshi Jager, Obama's love interest.
United States President Barack Obama on Friday strongly defended sweeping secret surveillance into telephone records of millions of Americans and foreigners' Internet use, as he assured people that intelligence agencies were not listening to their calls.
Obama quit smoking for Michelle. What did YOU give up?
A US court has dealt a blow to US President Barack Obama early into his second term, ruling that he violated the American constitution by making "recess" appointments bypassing the Senate confirmation process.
American Muslims overwhelmingly support President Barack Obama in his re-election bid, according to a new poll.
The Republican leadership in the Congress tapped Jindal -- seen as the fast emerging national leader of the party -- a day after the White House announced that Obama would deliver his maiden State of the Union Address as President at the American Congress on February 24.
The influential pro-Pakistan lobby has launched a concerted campaign urging US President Barack Obama to visit Pakistan during his trip to India November 6-9.
The Indian industry expects President Barack Obama to remain committed to the Indo-US nuclear deal and is hoping the new American administration will not create roadblocks for outsourcing, which is more helpful to the US firms than businesses in India.
Obama will meet leaders from the business, labour, progressive and civic community.
Describing the crisis triggered by superstorm Sandy as "heartbreaking" for the entire nation, US President Barack Obama has warned the storm was "not yet over".
Obama on Tuesday withdrew Majumdar's nomination, which was sent to the Senate on November 30, 2011, the White House said in a statement.
United States President Barack Obama claimed credit for the policies employed by his administration to tackle the global economic crisis during a visit to an auto plant rescued from bankruptcy with federal aid on Tuesday, where he warned the world not to bet against America.
Kiran Ahuja, the founding executive director of the National Asian Pacific American Women's Forum, has been appointed by President Barack Obama as executive director of the White House Commission on Asian American and Pacific Islanders.
US President Barack Obama on Monday announced investments and loans worth $4 billion by American agencies as part of measures to bolster trade with India.
"She is as talented a person as I know. You can see the incredible resonance she has with the American people. But I joke that she's too sensible to want to be in politics," Obama was quoted as saying by the Rolling Stone.
US President Barack Obama on Thursday said his administration is upping effort to remove trade barriers and create new market for American businesses, especially their presence in "some of the most dynamic markets in Asia".
In a narrow 218-214 vote, the United States House of Representatives on Thursday passed President Donald Trump's massive $4.5 trillion tax and spending bill -- his signature second-term policy package -- just ahead of the July 4 deadline.
Cutting across party lines, leaders strongly condemned the attack on Trump while he was addressing an election rally in Butler, which is about 56 km north of Pittsburgh in Pennsylvania.
Claiming that differences have emerged between United States President Barack Obama and Secretary of State Hillary Clinton on foreign policy issues, an American magazine on Friday suggested that Hillary Clinton's trip to India and Thailand has been her way to distance herself from the White House.
United States President Barack Obama's job approval rating has dipped below the 60 per cent-mark for the first time as worried Americans doubted his handling of the recession-hit economy, the deficit and health care issues, a new opinion poll showed on Monday.
US President Barack Obama hosted the MLS Columbus Crew team in the Rose Garden of the White House in Washington on Monday.
Accompanied by Japanese Prime Minister Shinzo Abe, Obama lay flowers at the cenotaph in Hiroshima, which sits in the shadow of a domed building, whose skeleton has been left standing in silent testament to the victims of the first ever nuclear attack.
In announcing the appointments, Obama said, "Our nation will be well-served by the skill and dedication these men and women bring to their new roles. I look forward to working with them in the months and years ahead."
US President Barack Obama and his Defence Secretary Leon Panetta have praised special forces for conducting a successful rescue operation in Afghanistan that left one American soldier and seven terrorists dead.