Good. The corrupt Left will refuse to maintain the wall, but it will still make it harder for them to import undocumented democrats and the other criminals they love.
Build the Wall and make it 2,000 miles long. Deport all illegals. No exceptions. Restore the rule of law.
I’d just as soon see real penalties for hiring illegal aliens, no public dollars spent on taking care of them and an end to chain migration. That would do more than the wall imho.