This timeline tells us that Thunderbolts* will happen either soon after the events in Brave New World or a little later down the road. Whatever the case, Congressman James Buchanan Barnes will be elected to office before he and the Thunderbolts become the New Avengers.

Brave New World. Captain America: Brave New World is the first Marvel movie to be released in more than six months, one of the lengthiest gaps between films in the studio's history. So it's somewhat surprising that Brave New World features just one end credits scene—but it's a big one in terms of setting up what happens next in the Marvel Cinematic Universe.