Ryan clearly feels that Obama's DAPA program and the extended version of DACA exceed the powers of the presidency and run afoul of the Constitution. Logically, he must feel the same way about the 2012 DACA amnesty.
Is Speaker Ryan being honest about his willingness to sue any president who exceeds his authority? Or was that line limited to actions that could be taken by a President Trump? Or, put another way, is Ryan only interested in suing over actions that might reduce immigration, but not over actions that reward illegal immigration?