History-making? GOP senator wonders if Obama's Hillary endorsement is indeed a 'first'

Historic https://t.co/WDvl5JqK1K

— Stephen Miller (@redsteeze) June 9, 2016

President Obama gave Hillary Clinton a rousing endorsement today, and that had Texas Sen. John Cornyn wondering:

Is this the first time a sitting POTUS has endorsed a presidential candidate under FBI investigation?

— Senator John Cornyn (@JohnCornyn) June 9, 2016

It just might be!

History made. https://t.co/fNziwYKoGt

— John Commodore Barry (@ShrinkGov) June 9, 2016