Yesterday, we learned that his DACA program was going to be rescinded because it was - like so much of what Obama implemented - created via unconstitutional executive overreach. Democrats are doing their best to scream "racism" but, whatever you believe the motive to be, it's hard to argue the given reason. Heck, it's a point that candidate Obama made repeatedly.
During his 2008 campaign, Barack Obama spent a fair amount of time reminding everyone that the constitution largely prevents Presidents from ruling by executive action, order, or memo. Executive overreach was a dangerous slippery slope that could destroy the rule of law. Back then, of course, he was talking about the alleged executive overreach of the Bush White House. Bush's popularity was in the cellar, trashing his administration was red meat for left wing voters, so Obama hammered on the point.