Tax cuts without a border are pointless except for those who (a) are extremely wealthy, or (b) don’t really give a damn about anyone else so long as their own current lifestyle and wealth are plentiful. A lot of conservatives fall under ‘b’.
I suspect stable employment and rising incomes are much more important than tax cuts to most swing voters.
?????Are you saying that because we are arguing over a border, the rest of Trump’s agenda is pointless and should be conducted?