Being mindful of the Disboard rules, this is the main purpose. Back when The EU opened up to Americans, it was supposed to be a reciprocal deal, the start of travel corridors. But due to all sorts of reasons, most of which we can't talk about on Disboards, this did not happen. No matter what Ursula von der Leyen or various European leaders did, there has been no movement on the reversal of the Presidential Executive order. So the next move is to now say, ok, you have no interest in letting us in but you want to come here, no can do buddy, we don't want you. Its a game of chess.
The only way any resolution of the travel ban is to treat America the way they treat us and tell them, no you cant come here. Only when it affects THEM and their freedom to travel, will they get serious about reciprocal travel corridors.
Also the % of population in Europe vaccinated is higher than % of population in America vaccinated, which will also play a part in diplomatic negotiations.