EXCLUSIVE — Advancing American Freedom, the conservative nonprofit advocacy group founded by former Vice President Mike Pence, filed an amicus brief on Monday urging the Supreme Court to uphold legislation mandating the divestment of TikTok from its Chinese owners or face removal from digital app stores.

The 20-page brief emphasizes national security concerns tied to TikTok’s ownership by ByteDance, a company headquartered in China and subject to influence from the Chinese Communist Party, and urges the nine justices to uphold the law known as the Protecting Americans from Foreign Adversary Controlled Applications Act.