Much depends on how extensive the amnesty would be and what Trump would get in return. A limited amnesty with a whole lot in return (end of chain migration, end of diversity lottery, mandatory e-verify, etc.) could conceivably leave our side better off than it is now.
Whatever he gets in return it would be a bad deal, this is not only a big deal it is the only deal that will matter. Press 1 for Spanish.
Don’t forget the wall. That alone would be a feather in Trump’s cap