The Supreme Court heard a challenge to President Obama's policies on immigration Monday morning, a politically sensitive case that could affect millions of people living in the United States illegally and their families.
The Obama administration has sought to offer some undocumented immigrants a guarantee that they would be allowed to stay in the United States temporarily. The president's done so in two steps. In 2012, he allowed undocumented immigrants brought to the U.S. at a young age to apply for a temporary reprieve from deportation. Then, in 2014, he expanded on the policy by including older undocumented immigrants who had come as children in the policy, as well as the undocumented parents of U.S. citizens.