This bill establishes a prohibition on the use of military personnel for immigration enforcement duties, amending both Title 10 and Title 32 of the United States Code. It specifically prevents members of the Armed Forces and the National Guard from being ordered to perform duties that enforce or support the enforcement of immigration laws, as defined by the Immigration and Nationality Act. This legislative action explicitly references the Posse Comitatus Act , reinforcing the principle that military forces should not be used for domestic law enforcement purposes.