President Obama surprised members of Congress and fans who gathered at Nationals Stadium for the annual Congressional Baseball tournament with a visit Thursday.

During the game, Obama mingled among members of Congress ahead of a crucial trade authorities vote Friday.

According to the White House pool report, fans on the Democratic side of the ballpark chanted, “Four more years! Four More Years!” as Obama visited with members of Congress with House Minority Leader Nancy Pelosi at his side.

Also heard in the ball bark was a “T.P.A.” chant, in support of the controversial trade deal.

Obama also took a photo with the Nationals’ “presidents” mascots, which he soon tweeted from his personal Twitter account.

I challenged them to a race. pic.twitter.com/FpEUTnYgoD — President Obama (@POTUS) June 12, 2015

According to the White House, Obama brought a case of his personal White House home brew beers for the winners of the congressional baseball game.