When long-serving and revered lawmakers pass away, it is customary for past and current Presidents to attend the funeral. This hasn’t been the case with Donald Trump. At the request of the family, Trump was not invited to the funeral of legendary Republican John McCain.

While Trump did attend the services for former President George H.W. Bush, he was largely boxed out by the previous Presidents who were these. George W. Bush, Bill Clinton and Barack Obama won’t need to box Trump out at John Lewis’ funeral as the current President will not be in attendance.
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Trump’s relationship with Lewis was far different. The President never quite got over the fact that the Georgia lawmaker refused to attend his inauguration. - PoliticusUSA