The President, in Illinois, is laying into the pretender.
Former US President Barack Obama has launched a stinging attack on Donald Trump and the "crazy stuff that is coming out of this White House".
Mr Obama made an apparent reference to a New York Times editorial that has infuriated Mr Trump.
Its anonymous author, described as a senior Trump administration official, claimed to be with working colleagues to protect the country from the current president's "worst inclinations".
Mr Obama said: "They are not doing us a service by actively promoting 90% of the crazy stuff that is coming out of this White House and then saying, 'Don't worry. We are preventing the other 10%.'"
The 44th president of the US was also scathing about Mr Trump's initial restraint when asked last year to condemn far-right protesters in Charlottesville, North Carolina.
"How hard can that be?" said Mr Obama. "Saying Nazis are bad?”
GO get ‘em Mr. President!
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