A federal agency that oversees telecommunications policy, the National Telecommunications and Information Administration, would be required to study how secure cell phone networks are against hacking and spying by foreign adversaries, then write a report on what it finds. The report would look at whether phone carriers are fixing known security weaknesses, following recommended cybersecurity practices, and using effective encryption to protect calls and data. Nothing changes immediately for phone users or carriers — this simply requires the government to investigate and publicly document how vulnerable the mobile networks Americans rely on actually are.