As the deadline to renew the National Security Agency’s surveillance powers looms, proposed bills and speculations of bills drive the conversation on national security versus privacy. Senate Republicans led by Sen. Tom Cotton, R-Ark., proposed a bill in June to completely renew Section 702 of the Foreign Intelligence Surveillance Act without any changes or sunset provision. Section 702, which expires at the end of the year, allows the NSA to collect data from foreign nationals without obtaining a warrant. […]