Obama: 'We'll carry Clinton to victory'
Mr. Obama praised Mrs. Clinton at the Democratic convention in Philadelphia, as the most qualified person ever to run for the White House, according to Unian.
He said voters faced a choice between hope and fear, attacking 'homegrown demagogue' Republican Donald Trump.
But Mr. Trump rejected the president's optimistic portrayal.
'Our country does not feel 'great already' to the millions of wonderful people living in poverty, violence and despair,' he said on Twitter.
Vice-President Joe Biden also delivered his own spirited address, saying Mr. Trump 'backs torture', 'religious intolerance' and 'betrays our values'.
'He has no clue about what makes America great,' Mr. Biden said, before the crowd started chanting, 'Not a clue!'
Obama closed the evening by recounting his key victories over his past eight years in office and painting an optimistic future for the country.
He extolled Mrs. Clinton's character, calling her a 'leader with real plans to break down barriers, blast through glass ceilings and widen the circle of opportunity to every single American'.
As reported earlier by 1492news.com, Robert Reich: 'Donald Trump is the least-qualified person ever to run for the presidency of the United States; Hillary Clinton is among the most qualified'