The Nationals reassigned Gushue to minor-league camp Monday, Matt Weyrich of NBC Sports Washington reports.
Gushue signed a minor-league deal with the Nationals on Wednesday, according to the MLB transaction log.
Gushue cleared waivers and was outrighted to Triple-A Iowa on Thursday, Jordan Bastian of MLB.com reports.
The Cubs designated Gushue for assignment Monday, Tim Stebbins of NBC Sports Chicago reports.
Gushue's contract was selected by the Cubs on Wednesday, Sahadev Sharma of The Athletic reports.
Gushue signed a minor-league deal with the Cubs on Friday that includes an invitation to major-league spring training, Jordan Bastian of MLB.com reports.
The Nationals added Gushue to their 60-man roster pool Wednesday, Mark Zuckerman of MASNSports.com reports.
Gushue was traded to the Nationals on Monday.