These critics are all of a sudden worried that Mr. Trump will overreach his executive authority. Even more fundamentally, they cringe, this action by a president will forever grant unchecked new powers to every future president.

Give me a break. These are the same goons in Congress who for decades have handed over congressional authority to any president in the White House who happens to wear the same color jersey they do. Democrats have done it for Democrat presidents and Republicans have done it for Republican presidents.

Why did Congress invent the National Emergencies Act in the first place if it is such a threat to the Constitution? And where has all this angst been the five dozen times presidents have declared national emergencies since the law was created in 1976?

Now come these Republican “conservatives” — many of whom also happen to be Never Trumpers — all horrified that Mr. Trump might declare the invasion on the southern border a national emergency.