Today, the U.S. House of Representatives is scheduled to vote on legislation extending the payroll tax cut (HR 3630). The bill is polluted with two riders: Rep. Lee Terry’s (R-NE) Keystone XL pipeline approval legislation and text to block the EPA’s Boiler MACT rules for hazardous industrial coal plant pollution. The U.S. Chamber of Commerce and the American Coalition for Clean Coal Electricity are campaigning with a slew of misleading ads about the EPA’s boiler MACT rules, calling the regulations on hazardous air pollutants like chromium and acid gases “onerous” despite the fact that they only apply to a small fraction of the coal industry. Sens. Barbara Boxer (D-CA) and Frank Lautenberg (D-NJ), with representatives of the American Lung Association and American Public Health Association, will hold a press conference today to oppose the poison pills in the payroll tax cut and appropriations bills.