ABC News has learned the president plans to announce on Friday his intention to spend about $8 billion on the border wall with a mix of spending from Congressional appropriations approved Thursday night, executive action and an emergency declaration.

A senior White House official familiar with the plan told ABC News that $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.