Immigration - As enacted, requires a memorandum of understanding entered between certain law enforcement agencies and federal officials concerning enforcement of federal immigration laws to include a requirement that the agency accept and honor any immigration detainer received from federal immigration authorities. - Amends TCA Title 4; Title 7; Title 38 and Title 41.

SB 1486 requires Tennessee law enforcement agencies to accept and honor federal immigration detainers by holding individuals for 48 hours beyond their scheduled release time (excluding weekends and holidays) to allow federal authorities to take custody. Agencies must also notify federal immigration officials as soon as possible before releasing someone subject to a detainer. This law applies to all Tennessee law enforcement agencies and directly affects individuals detained under federal immigration requests. The bill takes effect July 1, 2026, and amends Tennessee statutes related to law enforcement and immigration cooperation.