Last Thursday, nine senators signed onto a letter urging the Obama administration to take action to protect air quality and public health. In the letter, Sen. Bernie Sanders and eight other senators called upon the president to safeguard the health of families by standing strong against efforts to weaken the Clean Air Act. For four decades, this landmark legislation has saved lives and prevented illness. "We are disturbed by media reports that a number of industry groups are urging the administration to set a weak ozone standard, or to avoid setting a new standard at all," the senators wrote. "Polluters are ignoring 40 years of data demonstrating that clean air investments are good for public health and the economy."