An anonymous reader writes: A new bill has been proposed in Congress today by Representatives Ted Lieu (D-Calif.) and Blake Farenthold (R-Tex.) which looks to put a stop to any pending state-level legislation that could result in misguided encryption measures. The Ensuring National Constitutional Rights of Your Private Telecommunications Act of 2016 comes as a response to state-level encryption bills which have already been proposed in New York state and California. These near-identical proposals argued in favour of banning the sale of smartphones sold in the U.S. that feature strong encryption and cannot be accessed by the manufacturer. If these bills are passed, current smartphones, including iPhone and Android models, would need to be significantly redesigned for sale in these two states. Now Lieu and Farenthold are making moves to prevent the passing of the bills because of their potential impact on trade [PDF] and the competitiveness of American firms.