Carrie Filipetti is executive director of the Vandenberg Coalition.

Sept. 17 is the deadline for TikTok’s parent company, ByteDance, to sell the app to a buyer in the United States or face a ban. It is also Constitution Day. That these dates overlap is as much a coincidence as a crossroads. While the Constitution plays an indispensable role in weaving together e pluribus unum — “out of many, one”— it now faces the possible threat of a Chinese Communist Party deliberately weaponizing TikTok to tear that unity apart.