Why DACA Is Legal

Tomorrow, the Supreme Court will hear three consolidated cases challenging the Trump administration's decision to rescind DACA, an Obama administration policy suspending deportation of some 800,000 undocumented immigrants who came to the United States as children. DACA allows such migrants (often referred to as "dreamers," after the Dream Act, which failed to pass Congress) to stay in the U.S. as long as they arrived in the country when they were 15 years old or younger, were 30 or younger when the program began in 2012, have not been convicted of...