Here's a look at five major immigration stories to watch in 2018.
The Trump administration is moving to end the Deferred Action for Childhood Arrivals program, better known as DACA, leaving thousands of so-called DREAMers in limbo.
The Obama-era program protects about 700,000 young people who were brought illegally to the U.S. as children, shielding them from deportation and allowing them to work legally. Those protections have already begun to expire for some, with thousands of DREAMers potentially at risk of deportation starting in March.
Polls show widespread support for allowing DREAMers to stay in the country, but a permanent fix has been elusive as Congress and the White House try to hammer out the details.
2. Travel ban
The administration scored a long-sought victory when the Supreme Court allowed the latest version of the president's travel ban to take effect pending the outcome of several legal challenges.
Lower courts had blocked much of this travel ban, as well as earlier versions, partly because of concerns that they discriminate against Muslims. The latest travel ban covers many (though not all) travelers from six majority-Muslim countries, plus North Koreans and government officials from Venezuela.
One appeals court has already found that the president exceeded his legal authority; a second appeals court will rule soon. An appeal to the Supreme Court is all but certain to follow.
3. Border wall
This was arguably Trump's signature issue on the campaign trail, and a reliable applause line at his big public rallies this year.
But progress has been slow.
The administration has commissioned prototypes near the southern border outside San Diego. But Congress has yet to appropriate any money for construction. On the campaign trail, Trump promised to make Mexico pay for the wall, but officials there have said several times they will not do so.
Critics have questioned the need for the wall in the first place, especially since the number of immigrants trying to cross the border illegally has fallen to the lowest level in decades.
4. Sanctuary cities
President Trump signed an executive order intended to punish so-called "sanctuary cities" that limit their cooperation with immigration authorities. Several of those cities pushed back, arguing that the administration can't withhold federal money to coerce them into changing their immigration policies.
So far, courts have ruled against the Trump administration. A federal judge in California issued an injunction partially blocking the executive order in a case brought by San Francisco and Santa Clara County. Judges in Chicago and Philadelphia also ruled against the administration.
This is a battle that's likely headed to appeals courts in the new year.
5. Employer crackdown
So far, the administration's enforcement efforts have focused mostly on immigrants themselves, not on employers who hire undocumented workers.
Trump administration officials say that will change next year. But past administrations found that workplace raids carried a high political price. The new year may reveal whether the White House has the stomach for a fight with the pro-business wing of the Republican Party.