Twenty-six states are challenging the action, which would grant temporary, quasi-legal status and work permits to as many as 4 million parents who entered the U.S. illegally before 2010.
The next president could end Obama's executive action on immigration — and many GOP candidates have vowed to do it. For almost 700,000 immigrants in the U.S. illegally, the clock may be ticking.
The federal court ruled that President Obama's program goes beyond the prosecutorial discretion powers granted to the executive, so it kept the executive action from being implemented.
The president's recent executive actions will allow millions of immigrants to stay in the U.S. But many businesses say those changes aren't enough to help them find and keep all the workers they need.
Texas, which is leading the states, filed a lawsuit in federal court in the Southern District of Texas. State Attorney General Greg Abbott said the president's action "tramples" the Constitution.
Defying congressional Republicans, President Obama will defer the deportation of the undocumented parents of U.S. citizens and will also prioritize the deportation of criminals.
President Obama is preparing to take executive action on immigration. But some people are calling it an "executive order." There's a big difference between the two terms.