Obama , a constitutional expert, himself stated that DACA was unconstitutional...the Dream Act floated about Washington and was never passed...in 2012 President Obama signed off on it nevertheless despite not having the legal authority to do so under the Constitution,   to change US laws without Congress's approval.

President Trump will likely use his pen to cancel Obama's un constitutional unilateral action and hand the hot potato back to the Congress to do it properly according to the US Constitution.

The Congress and Senate will scream when the hot potato lands back in their laps, but it was and still is their job...let them do the squirming.