Anti-Sharia bills, also known as Foreign Law Bans or American Laws for American Courts (ALAC) bills, refer to a series of state-level legislative proposals in the United States aimed at prohibiting the use of Sharia law, foreign or religious legal codes, or international law in domestic courts, particularly in family law, contracts, and civil disputes. These bills emerged in the late 2000s and early 2010s amid concerns from conservative and anti-Islam advocacy groups about the perceived infiltration of Islamic principles into the American legal system, often framed as protecting American sovereignty and national security post-9/11. Proponents argue such measures protect constitutional supremacy and prevent parallel legal systems, while critics, including the ACLU, Muslim advocacy organizations, and the American Bar Association, condemn them as discriminatory, Islamophobic, unnecessary given existing constitutional safeguards, and potentially affecting international agreements like child custody treaties. Between 2010-2017, over 200 such bills were introduced in more than 40 states, with at least 10 states enacting versions, including Oklahoma (2010, later overturned), Tennessee (2011), and Alabama (2014). Key influencers include organizations like the Center for Security Policy and the American Freedom Law Center, with attorney David Yerushalmi as a key drafter. The movement peaked around 2013 but has persisted with introductions as recently as 2023, though many bills faced legal challenges for violating the First Amendment. The practical impact is debated as U.S. courts already prioritize domestic law, but these bills reflect broader anti-Muslim sentiments and cultural-political divides.