Donald Trump speaks at Turning Point Action's The People's Convention.
On his 78th birthday on Friday, Donald Trump received one congratulatory message he could have done without.
“Take it from one old guy to another,” wrote Joe Biden, 81, on social media. “Age is just a number.”
In the brutal fight for the presidency, Trump has sought to portray his rival as feeble and doddering — barely capable of getting a sentence out — while presenting himself as strong and vigorous by comparison.