The 22 senators who signed the letter suggested smaller steps the president can take to help the young immigrants, such as making sure they know they can request deportation delays.
In the letter sent Wednesday, the senators acknowledge that Obama must enforce the law but say exercising prosecutorial discretion has a long history in the U.S. and is consistent with the rule of law.
Last year, the House passed the DREAM Act, which would have allowed the youths to stay in the U.S. if they came to the United States before the age of 16 and spent at least two years in college or the military.
In his State of the Union in January, Obama said the United States should rethink the practice of deporting young immigrants who have grown up and been educated in the United States.
This is based on a story by The Associated Press.