Lopez Obrador has Biden over the barrel.

If he did he would make demands that Biden could actually grant, rather than just pie-in-the-sky stuff like that. Biden doesn't have the power to "grant at least 10 million Hispanics living in the U.S. the right to remain and work legally," or to repeal the Helms-Burton Act, as AMLO knows full well. That's a list of things that you publicly insist on when you're just posturing, not making a serious demand.

Remain in Mexico is not going to be reinstated. That doesn't mean there aren't some things that Mexico can be pushed to do, at the margins. But nothing that will fundamentally or significantly alter conditions at the border, because there's no deal to be made with Congress on the more significant things that AMLO might want (like your list), because Congress can't agree on any of those issues right now.