The Renewable Fuel Standard (RFS) program, administered by the Environmental Protection Agency, was created to reduce greenhouse gas emissions and expand the nation’s renewable fuels sector while reducing reliance on imported oil. For independent refiners in the U.S., the cost to comply with the RFS is on track this year to exceed all other costs of running their refineries, causing them to choose between reducing fuel production or suspending operations. America’s domestic refineries are closing at accelerating rates. "This limited refining capacity makes our national supply chain more vulnerable to cyber-attacks or natural disasters which disrupt fuel availability," writes University Professor Sean O'Keefe and co-author General Anthony C. Zinni, USMC Ret. "And as more refineries close, our military bases and troops will experience supply shortages domestically and abroad." Read more in their article, "Why the Renewable Fuel Standard is a threat to our nation's supply chain security," published in The Hill.