NORTHVILLE, United States, July 13, 2024 (BSS/AFP) - US President Joe Biden tried to reassure voters he was in good shape Friday as he returned to the campaign trail amid mounting pressure from Democrats to step aside.

"We've got to finish the job. And I promise you I am OK," the 81-year-old told supporters at a diner in Northville in the battleground state of Michigan, which he must win in November to beat Donald Trump.