Creates a special H-2B temporary worker pathway for Guam that lets employers use a Guam temporary labor certification issued by the Governor of Guam in place of the usual federal findings. If the Governor approves a certification, the Secretary of Homeland Security must treat U.S. worker unavailability, no adverse wage impact, and temporary need as satisfied, and the certification can only be overturned by a court finding fraud, willful misrepresentation, or gross misconduct. The law also fixes how key terms are defined by referencing Department of Homeland Security rules as of July 24, 2018, designates the Secretary of Homeland Security (or a delegate) as the relevant official, and directs the Governor of Guam to set procedures for deciding what counts as a "qualified need."