He should hold a live “veto signing ceremony” flanked by victims of illegal immigration telling their stories, and the President saying after each story “How can anyone say that alone is not a national emergency”, stats on how many people can be killed by the enormity of the drugs flowing across the border, etc. between penstrokes of the veto that the press would be forced to cover live.
Dems circle the wagons while Repubs circle the firing squad.
That is one great idea!