The above is speculation as well. Chimaev has ONLY been scheduled for fights in the MIddle East since '22 and Dana White is a widely known liar.
Dana White has done a lot for MMA, but he's been a controversial figure too, with these being the biggest lies he has ever told.
www.thesportster.com
Here's chimaev in July '24 saying he doesn't have any problems getting a visa, but then says he hasn't applied for one, and the UFC told him to "wait and fight in Arab countries for now." If that's not suspicious, then he should give you a brown, unmarked package with wires coming out of it at the US Southern border so you can take it in to the US, no questions asked.