Senator Mark Kirk is distancing himself from the presumptive GOP candidate for President.

Senator Mark Kirk has had a change of heart and announced that he won't support Donald Trump's candidacy after Trump recently said a judge of Mexican descent couldn't be objective in a lawsuit involving Trump University because Trump wants to build a wall between the U.S. and Mexico.

Kirk questioned Trump's temperament when it comes to handling the the role of Commander in Chief and taking charge of the nation's nuclear weapons. Kirk says he factored in the most recent Trump flap along with past attacks on Hispanics, women and the disabled in deciding to drop support for Trump.

The criticism of the disabled hits home with Kirk with lingering disabilities tied to his stroke. Democrats question why Kirk didn't make the decision sooner as Kirk prepares for a November faceoff against Congresswoman Tammy Duckworth.