It has been noted that President Joe Biden opened his Madison, Wisconsin rally by taking a shot at his opponent’s mental fitness, mocking former President Donald Trump for a bonkers story he told about George Washington’s army seizing airports from the British via Mediaite.

Biden has been meeting increasing scrutiny since his verbal stumbles during last Thursday’s debate against former President Donald Trump.

Recent polling showed 72% of Americans do not believe he has the “mental and cognitive health to be president,” and on Tuesday, Rep. Lloyd Doggett (D-TX) became the first sitting Democrat in Congress to publicly call for him to withdraw from the race. The week continued to bring more tough headlines for the president, as rumors swirled about internal discontent among Democrats and anxiety among campaign staff.

It is noted that Biden remains adamant that he intends to stay in the race, and is sitting down for an interview with ABC News’ George Stephanopoulos for an interview that will air Friday evening.

Biden kicked off his Wisconsin speech — in which he defiantly declared he was “staying in the race” — by questioning whether Trump really “has it all together”:

Folks, did you have a good Fourth of July? By the way, if you’re wondering whether Trump has it all together, did you ever hear how he explained the Fourth of July, when he was president? No, I’m serious, this is true — his explanation of how America won the Revolutionary War? I’m not making this up.

He said in his Fourth of July speech, five years ago, he said, George Washington’s army won the Revolution by taking control of the airports from the British. Talk about me misspeaking? Airports and the British in 1776? It’s true, he is a stable genius, this man.