The former Tottenham Hotspur winger has officially joined the Seattle Sounders as a designated player.
"This is a historic day for Sounders FC and our fans," said Seattle Majority Owner Joe Roth in a press release. "Clint is a world-class soccer player who can take this club to a higher level. We have been consistent in our message to the fans that we will spare no expense to win trophies."
Dempsey has scored 35 goals in 99 appearances for the U.S. national team. He began his career with the New England Revolution of MLS in 2004, moving to Fulham after three seasons.
After six successful seasons with the Cottagers in which he scored 50 goals in 184 league appearances, he signed for Tottenham in the summer of 2012. He made 29 league appearances in his one season with Spurs.
"In doing something of this magnitude we had to make sure we had the right player. Clint Dempsey fits that mold," said Owner and General Manager Adrian Hanauer. "Clint is a proven winner, a leader and a competitor who we believe will raise the bar for this organization on and off the field."