The House of Representatives passed a bill yesterday that would prohibit U.S.-based aircraft operators from participating in the European Union Emissions Trading Scheme (EU-ETS). The House previously approved a similar bill last year. The new House measure, “The European Union Emissions Trading Scheme Prohibition Act,” was based on a bill sponsored in the Senate by Senators John Thune (R-S.D.) and Claire McCaskill (D-Mo.). The bill now awaits President Obama’s signature.