The State Department said it was halting all visas for Palestinians from Gaza, including medical visas for children.

The move comes after conservative activist Laura Loomer, an advisor to President Trump, complained on social media about children from Gaza arriving in the U.S. for medical treatment and questioned how they got visas.

The move comes after far-right activist Laura Loomer drew attention to a video posted by the nonprofit HEAL Palestine and called the visas a “national security threat.”