The president said about 22 times in public (according to John Boehner, a great flip flopper himself) that he lacked the constitutional authority to enact amnesty for illegal aliens without permission of Congress. [Article 1, Section 8 of the U.S. Constitution. ]
"Every senator in this body should be put on record whether he or she believes it is constitutional for a president to disregard, to ignore federal immigration laws, and to grant blanket amnesty to millions in defiance of both the laws on the books and the voters" - Ted Cruz, son of Cuban immigrant.
"It is Congress’ job under Article 1,Section 8, to create a uniform rule of naturalization, a way in. It should be done line by line, section by section with the input of the public instead of being done by one person. It looks more like a dictatorship when a president is unilaterally making decisions for the American people." Mia Love, daughter of Haitian immigrants