Spicer would not say who wrote the statement.
Trump allies are hoping that America First Policies will serve as a powerful flanking operation, particularly in defending the president's upcoming Supreme Court pick.
The “dissent channel” memo says Trump's ban will not make the country safer.
Walker was part of a group of GOP state leaders who addressed a Koch network conference. Their common theme: President Trump should turn funding for domestic policies over to the states.
A spokesman said Obama “is heartened by the level of engagement taking place in communities around the country."
Tracking the administration's earliest moves.
The call to Justin Trudeau comes as Trump's travel ban sparks protests across the United States.
The president's pick will replace the late Justice Antonin Scalia.
In a series of tweets Monday morning, Trump blamed Delta airlines, protesters and Senate minority leader.
Two senior administration officials agreed to explain the president's executive order on Sunday evening-- but only on the condition of not being identified.
