Trafficking Survivors Relief Act of 2017 This bill amends the federal criminal code to establish a process to vacate convictions and expunge arrests for criminal offenses committed by trafficking victims that directly result from or relate to having been a trafficking victim. A trafficking victim may file a motion: (1) to vacate a conviction for a nonviolent offense that does not include a child victim (i.e., under age 18); (2) to expunge records of an arrest for a nonviolent offense that does not include a child victim; or (3) to expunge records of an arrest for an offense that is violent or that includes a child victim, if the charges are reduced, dismissed, or disposed of.