Accusations continue to fly from lawmakers and presidential hopeful Mitt Romney that the Obama administration has leaked national security information for political gain. Leaks, of course, are nothing new in Washington, but now the Senate has jumped into the fray, with a new proposal to tighten control over the flow of information between intelligence agencies and the press.

This summer the Justice Department opened two investigations into leaks about a foiled terror plot and U.S. cyber-attacks against Iran. But leak prosecutions haven’t always proved easy. As we’ve explained before, there’s no single law criminalizing the disclosure of classified information. National security leaks are sometimes prosecuted under the Espionage Act, which has been used a record six times under Obama, but there is perennial debate over whether to introduce more stringent laws against leaks.

On Monday, the Senate Select Committee on Intelligence filed new anti-leak legislation. The bill wouldn’t amend the Espionage Act, or make any blanket criminal penalty for leaks. But it does include several provisions that could stymie reporting on national security.

Read the full piece at Propublica.