A top Republican lawmaker in the House of Representatives is backtracking on a proposal that would have given Secretary of State Marco Rubio the power to revoke American citizens’ passports if he decides they have provided “material support” to terrorists.

Under Mast’s original proposal, the secretary of state would have been empowered to refuse or revoke passports of people they deem to have materially supported terrorists.

Activists were especially concerned the provision could be used against critics of Israel, given Rubio’s aggressive move to revoke green cards and student visas from noncitizens who have publicly demonstrated support for Palestinians.