State Sen. Matt Jones (R-Boulder) has the measure passed by a voice vote.
Jones said in a statement Friday that his bill would allow people to travel to the state to engage in “sexual activity” and “sex tourism” in exchange for monetary compensation.
“Sexual activity is defined as ‘the act of penetration of the vagina or anus, pubic area, or any other sexual organ.'”
In the bill, the term “sexual act” includes “pregnant, breastfeeding, and other non-preginary human beings.”
The bill would also prohibit “any person, other than a person performing a medical service or participating in a health care program, from engaging in sexual activity in any other state or territory.”
The measure would also bar “sex tourists” from visiting Washington State or any of its territories, including Alaska.
The bill has garnered bipartisan support in the state’s Senate and is expected to be signed into law.
The measure is the latest in a series of sexual-tourism bills that have gained traction across the nation.
Washington state is home to the world’s largest sex tourism industry, according to a study by the American Association of Travel Agencies (AATO).
Last year, the state saw a 3 percent spike in travel-related complaints, according the AATO.
A 2015 report from the American Civil Liberties Union found that Washington state was home to nearly a third of the nation’s 1.4 million adult tourists.
The Associated Press contributed to this report.