I think this requires more federal intervention or at least state help, it's too complicated to handle at a city level. The city is just going to do what is the fastest and easiest, which means the most expensive and not sustainable for long without making things worse. I'm not sure how much Biden can do without help from congress (with the House being run by Republicans) though. But maybe there's at least more that can be done at the state level, like splitting up the migrants into several cities and not putting most of the burden on NYC.