It's happening: Trump declares national emergency to get border wall funding
A senior White House official familiar with the plan to get money beyond the congressional funding told ABC News $1.375 billion would come from the spending bill Congress passed Thursday; $600 million would come from the Treasury Department's drug forfeiture fund; $2.5 billion would come from the Pentagon's drug interdiction program; and through an emergency declaration: $3.5 billion from the Pentagon's military construction budget.
_________ Bottom Line:
This is a serious extension of presidential power and one that will not be forgotten by Democrats. It is also not a "conservative move". Trump is seeking any avenue by which to fulfill his campaign promise but this a pretty extreme use of executive power. Though it MAY prove a popular one.