The Chicago Fire shot-stopper will join up with the national team, which features a mix of senior team members and U-23 players.
Goalkeeper Bill Hamid has been forced to withdraw from U.S. national team camp with a knee injury and will be replaced by Sean Johnson , U.S. Soccer has announced.
The federation didn't provide details of the injury, only saying the D.C. United goalkeeper suffered the problem just prior to the start of camp.
Johnson, 26, has been capped five times by the senior national team, most recently in February 2015.