What he did was promise to enact a massive stimulus if elected. If that is illegal you might as well ban any kind of campaigning, because any campaign promise could be construed as a "bribe" to deliver concrete benefits to voters.

> What he did was promise to enact a massive stimulus if elected.

In an election he's not on the ballot for, and it's contingent on his buddies getting picked. He could push for $5,000 checks now - he's not because it's a bribe, and he hasn't gotten what he wants out of it yet. He already has Republicans in control of the House and Senate to do things.