Where the Legal Showdown Over Trump's Travel Ban Stands

An appeals court ruling on the block of the travel ban could come within a day.

Where the Executive Order Currently Stands

The 60,000 visas revoked under the executive action became valid again as long as the travel documents fulfilled the usual requirements.

Immigrant and refugee advocacy groups, concerned the executive order might soon go back into full effect, urged travelers to "book flights immediately."

But the court still has to rule on the department's request to place an emergency stay on the judge's order to allow the government to resume enforcing the ban.

That decision could come as early as Monday, experts tell ABC News.

What Led to the Block on the Ban

Numerous lawsuits have challenged the president’s executive order, including some on behalf of travelers detained at U.S. airports and threatened with deportation in the hours after Trump signed the action on Jan. 27.

U.S. District Judge James Robart in Seattle decided Friday in favor of the states' request for an immediate restraining order and placed a nationwide, temporary block on the travel ban.

"The executive order adversely affects the states' residents in areas of employment, education, business, family relations, and freedom to travel," Robart wrote, also citing damage to the missions of the states' universities and to the states' tax bases.

How the Trump Administration Responded to the Judge's Ruling

The Justice Department late Saturday night asked the Ninth Circuit Court of Appeals in San Francisco for both an immediate stay and an emergency stay to lift the restraining order, said Kate Shaw, an ABC News contributor and professor at Cardozo School of Law in New York City.

Lawyers for the department argued that the restraining order went "vastly overboard" and that it "second-guesses" the president who has authority over immigration and foreign affairs.

Their filing also cited a separate federal court opinion issued Friday in Massachusetts that rejected a request to suspend the executive order.

President Trump on Saturday referred in a tweet to this court ruling in Boston.

Where We Go From Here

Washington and Minnesota have until 1 a.m. PT Monday to file a response to the Justice Department's request to lift the block on the travel ban.

Then, the Trump administration will have until 3 p.m. PT Monday to respond to the states' filings.

Once all these filings are made, the Ninth Circuit judges will be able to make a ruling on whether to let the temporary restraining order stand or not.

What Happens If the Appeals Court Overturns the Judge's Ruling

If the court agrees to the Trump administration request, it may allow the federal government to again enforce the travel ban.

But that wouldn't necessarily mean the legal battle is over.

"We anticipate filing a broad challenge to the executive order in the coming days on behalf of a variety of plaintiffs," ACLU senior attorney Lee Gelernt told ABC News.

"Right now there are a lot of cases because there was outrage over the executive order so people rushed into court to protect their clients, but it remains to be seen how the cases will fit together," Gelernt said.

ABC News' Jack Date, Michael Edison Hayden and David Caplan contributed to this report.