Obama has endorsed Hillary Clinton in the 2016 White House race and has repeatedly pilloried Trump's populism
FBI Director James Comey portrayed the politician as "extremely careless"
One document from 1995 lists half a dozen White House receptions, dinners and other events to which the real estate mogul was invited.
"You know, I've gotten millions more votes. Not just a couple, millions of more votes than Cruz," Trump says.
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