On Tuesday April 17, 2018, the United States Supreme Court struck down the definition of "crime of violence" as unconstitutionally vague. This is an extremely important decision for undocumented immigrants or green card holders because it will limit the number of cases the Department of Homeland Security will be able to file.
Prior to this decision under the immigration and national act ("Act"), crimes that were considered to be a "crime of violence" would make an alien deportable. The Supreme Courts Decision in effect holds that section of the Act unconstitutional because it does not give defendants a fair notice of what crimes exactly have a substantial risk.
This is a huge victory in light of the current administrations attempts to place as many immigrants in deportation proceedings.
To make the matter even more ironic Justice Neil Gorsuch, a Trump nominee to the bench was the one who tipped the 5-4 decision to strike the law as unconstitutional.