What can be done if Trump is openly defying the courts?

The question of what happens if the Trump administration openly defies a federal court order has hung over the United States since President Donald Trump’s second term began. If that happens, it will trigger a constitutional crisis. Now, that long-awaited crisis may be upon us.

On Saturday, Trump issued a proclamation claiming the authority to deport Venezuelan nationals that, he claims, are members of a criminal gang known as Tren de Aragua. Trump alleges that these foreign nationals may be swiftly removed under the Alien Enemies Act of 1798, a law that has only been invoked three times in American history — the last time in World War II.