President Joe Biden is taking a page out of former President Donald Trump‘s book in an effort to unsettle his rival.

During Biden’s speech at the Mother Emanuel AME Church in Charleston, South Carolina, Biden smiled as he took a swipe at his likely Republican opponent, calling him a “loser.” Since then, the president has called Trump “the former president” and saying “he’s already Herbert Hoover.” Trump has previously said he doesn’t want an economic crash on his hands because he doesn’t want to be like the 31st president.