In his latest move to clamp down on illegal immigration and immigration more broadly, President Trump has filed a presidential action invoking the Alien Enemies Act of 1798, a seldom-used law that gives the president authority to detain or deport nationals of an enemy nation during wartime. It’s only the fourth time in American history a president has used the act — and the first since World War II.
Then the answer is no. That’s what being a nation of laws means. Doesn’t matter if Congress has abdicated their duties. No formal declaration of war, no new powers.
Now likely what you mean is that we’ve left the notion that we are a nation of laws, then yes. Laws have stopped having any kind of meaning for the President.