The perspective might seem different to a person dying of dehydration on the opposite side of the wall as well as the children that might be with them.
Its a cruel concept and unnecessary, immigration from the southern border has decreased since 2008 and the wall itself has become a dog-whistle for anti-Mexican rhetoric. Mexicans dont sit in board rooms deciding how much an american worker gets paid. Automation, declining union membership and outsourcing have done 50 times the damage to the American wage than Mexicans immigration ever has.
I'm a lefty that believes in the 2nd Amendment, however, so id probably choose gun control as the give-away concession.
Medicare for all, green new deal (done intelligently, more nuclear than 'biofuel'), student loan forgiveness, free public tuition, marijuana legalization and reinvesting overblown police budgets into social programs would be off the table/non-negotiable.