How 11 of Trump's most controversial actions have fared in court

Also in January, the Supreme Court allowed the administration to enact its ban on transgender Americans serving in the military, pending further litigation.

Two federal judges have ruled against Commerce Secretary Wilbur Ross' efforts to put a question about citizenship on the 2020 census. The Supreme Court is scheduled to hear arguments on the case in April.

In May 2018, a US District Court judge blocked the Department of Health and Human Services' attempt to cut $200 million in grants to teen pregnancy prevention programs, ruling it was without cause.

Federal judges have struck down 17 separate attempts by the Trump administration to roll back environmental regulations, according to the Washington Post's tally.

In many such cases, agencies' efforts were blocked for technical violations in not following the proper administrative procedures for changing policies.

But dozens of other environmental regulations have been allowed, or haven't made their way to court yet. The New York Times counted 78 rules the Trump administration has eliminated, such as requiring oil and gas companies to report methane emissions.

Federal courts struck down two versions of Trump's infamous travel ban, which barred travelers from a number of majority-Muslim countries. But the Supreme Court eventually ruled in Trump's favor and allowed his third travel ban to take effect in June 2018.

The justices ruled 5-4 that national security concerns gave Trump broad authority to restrict who enters the country.

Shortly after Trump halted family separations in June 2018 amid widespread outrage over his "zero tolerance" policy, a federal judge ordered that the administration reunite all families that had been separated under the policy, and blocked any future separations.

The case is still ongoing and the judge is considering whether to force the administration to reunite other families split up before the official policy was announced.

The Supreme Court ruled against Trump on his asylum ban in December 2018, siding with a federal judge who blocked the administration's efforts to bar migrants from claiming asylum if they crossed the border illegally.

US immigration law explicitly states that migrants may request asylum no matter how they cross the border. The case is still ongoing.

A federal judge blocked the Trump administration from forcing migrants to return to Mexico and wait after requesting asylum in the US. The policy, known as "Remain in Mexico" or "Migrant Protection Protocols," was challenged by immigrant rights groups who argued that making migrants wait for their asylum hearings in a foreign country violated US law.

Multiple federal courts have ruled against the Trump administration's crackdown on so-called "sanctuary cities," arguing that the government cannot withhold federal funds from cities that limit police departments' cooperation with immigration authorities.

Federal courts blocked the Trump administration from fully ending the Deferred Action for Childhood Arrivals (DACA) program, the Obama-era policy that shielded young, unauthorized immigrants from deportation.

Though immigrants may no longer apply for DACA status if they've never had it before, people who are currently under the program's protection may renew their status.

The case is ongoing, but the Supreme Court didn't take up the case in its current term and might not rule on it before 2020.