To amend title 18, United States Code, to provide penalties for certain obstructions of the enforcement of Federal immigration laws.

Stopping Lawless Actions of Politicians (SLAP) Act of 2017 This bill amends the federal criminal code to impose criminal penalties—a fine, a prison term of up to five years, or both—on a state or local official who has custody of an individual and knowingly ignores a request from the federal government to take custody of the individual, if the requesting authority has designated that individual as a violator of immigration laws.