"I think the Republican nominee is unfit to serve as president," Obama said at a White House news conference. "I said so last week. He keeps proving it."

Obama added that Trump has shown he is "woefully unprepared to do this job" after his comments on military families as well as his handle on foreign affairs.

He slammed Trump for his rhetoric, including the one against parents of a slain Muslim-American soldier, and said the Republican Presidential nominee doesn't have the judgment, temperament or understanding to be the president of the country.

As such he was highly critical of the Republican leadership who are supporting the billionaire from New York.

"There has to come a point at which you say enough," Obama said of the Republican leaders.

"The notion that he would attack a Gold Star family that made such extraordinary sacrifices on behalf of our country, the fact that he doesn’t appear to have basic knowledge around critical issues in Europe, in the Middle East, in Asia, means that he is woefully unprepared to do this job," the President said at the White House.

Obama remarked that Republican denunciations of Trump "ring hollow" as they continue to endorse Trump.

"The question that I think that they have to ask themselves is, if you are repeatedly having to say in very strong terms that what he has said is unacceptable, why are you still endorsing him? What does this say about your party that this is your standard bearer?" Obama said.

"This isn’t a situation where you have an episodic gaffe. This is daily and weekly where they are distancing themselves from statements he's making."

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