If Biden didn’t need bipartisan support to screw up the border, why does he now need bipartisan support to fix his own mistake?

Trump’s wait in Mexico policy was a stroke of genius. Hey, Joey, if it ain’t broke, don’t fix it!
Let them come from every corner of the world and sign up for asylum. Then rather than wait eight years in an American hotel for your hearing date, just go home.
As the Oak Ridge boys song says : “ You don’t have to go home, but you can’t stay here”
If Biden didn’t need bipartisan support to screw up the border, why does he now need bipartisan support to fix his own mistake?
Updates
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I only want to talk about the wait in Mexico policy. It wouldn’t cost a dime. You pick up a pen and sign an executive order. Why won’t Biden do that? I don’t want to talk about the fake bill that extorts money for Ukraine. This is about just picking up a pen and signing an executive order.
If Biden didn’t need bipartisan support to screw up the border, why does he now need bipartisan support to fix his own mistake?
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