1:04 PM PT -- The Bucks just met with Biden ... and the team presented #46 with his very own jersey.
Giannis spoke about his own journey to becoming a champion ... giving a special shoutout to all his teammates' families for their support over the years.
Biden also had some positive words about the Bucks ... and of course, had some jokes.
Giannis Antetokounmpo and the Milwaukee Bucks are in the nation's capital to visit with President Joe Biden at the White House on Monday ... and naturally, the MVP's got his championship ring with him!!
The 2021 champs will become the first NBA team to visit 1600 Penn since Barack Obama hosted the Cleveland Cavaliers in 2016 ... with the Golden State Warriors, Toronto Raptors and Los Angeles Lakers passing on the opportunity.