Following the lead of Maine and San Francisco, a handful of states and local governments across the U.S. are considering laws that address cell phone radiation concerns. How we got here Maine largely led the way in early 2010 with a bill that would have required warning labels that cell phones may cause brain cancer. That legislation later died in a Maine House of Representatives committee, but other states and a few cities soon followed (Congress held a couple of in 2009 but has taken no action). Then, almost a year ago, San Francisco really got the ball rolling when it passed a groundbreaking ordinance that required cell phone retailers to display the Specific Absorption Rate (SAR) (defined by the FCC as "the amount of radio frequency energy absorbed by the body when using a mobile phone") for each phone model sold. That ordinance also was scrapped following opposition from the wireless industry, but San Francisco is trying again. And as the following list shows, lawmakers in city halls and statehouses across the country are joining the cause.