Although Grenell denies officially lobbying the Romanian government on behalf of the brothers, and the Romanians have said there was no “pressure” applied to them, influential figures in MAGA world have long championed the Tate brothers

So you have no proof of collusion of anykind except unnamed "influential figures" are fans of Tate.

What do you want the US to do? You people want unchecked immigration but want to prevent US citizens from entering the country? Pick a lane, lady