Shut the damn government down again and veto everything sent up from Congress, related or not, until they put up $10 billion for the wall with no stipulations about what sort of wall, ICE, beds, etc.
Then ice the cake by declaring the Mexican drug lords a clear and present danger to the US and tell Congress the laws that enable the War On Terror enable the President to take any and all actions required to destroy the Mexican cartels, including building a wall on the Southern border.
If they want to repeal part or all of the Patriot Act, let them, but don't sign the repeal so they have to override a veto to do it.
They called the tune now let them dance to it.