Dina Cappiello

Six years ago, there was a massive spill of coal ash sludge in Tennessee. Three years later, tons of coal ash swept into Lake Michigan. Last February, there was another spill and gray sludge spewed into the Dan River in North Carolina.

Incoming Senate Majority Leader Mitch McConnell is promising the new Republican majority will quickly resurrect Keystone XL pipeline legislation killed by Democrats, potentially setting up an early 2015 veto confrontation with President Barack Obama.