ANALYSIS: Donald Trump Forces Defining Moment for His Presidency – and the Nation

For pure impact, and to fully understand the order’s ramifications, take note of the style as much as the substance.

The order came with only perfunctory notice delivered to congressional leaders and even new Cabinet officials. Basic facts –- would it apply to green card holders, or those who also have passports from other countries –- were only being settled on after wild protests played out at the nation’s airports.

The backlash has been fierce and sweeping. Leading companies –- Apple, Ford, Goldman Sachs -– voiced disapproval. The sports world is scrambling to figure out what it means for international competitions and travel by athletes from impacted countries.

“These career bureaucrats have a problem with it?” said White House press secretary Sean Spicer. “I think that, they should either get with the program, or they can go.”

The choices ahead are just about that stark for interested parties. That’s because the questions raised by the order are fundamental to the balance of power in American democracy, and to America’s vision of itself in the world.

Do Democrats use this as a rallying cry to oppose the Trump agenda at every turn? They are already talking about delaying Trump nominations as a result.

The moment also coaxed a statement out of former President Barack Obama, only 11 days after leaving the Oval Office. The next fight for Democrats is about to be joined, with Trump set to name his Supreme Court nominee on Tuesday.

But the images of the order’s aftermath –- people, including children, in limbo at airports -– have been searing. Those being denied entry to the United States include graduate students, medical professionals, and could include popular athletes and entertainers.

This is President Trump’s vision in action, as he makes good on a campaign promise that called for stronger moves even that this.

“The system actually worked very well,” Spicer declared from the White House.

The rest of the system, though, is only now gearing up for the fights ahead.