By Ben Geman - 12/16/10 04:17 PM EST
Markey is a staunch ally of environmental groups and is set to clash with Rep. Doc Hastings (R-Wash.), who will be committee chairman when Republicans take over next year.
The committee has jurisdiction over issues including oil-and-gas drilling on public lands and in federal waters.
A preview of their collision came two weeks ago, when Hastings bashed the Obama administration’s retreat from expanded offshore drilling and hinted he might seek to reverse it. Markey, however, praised the decision to abandon plans to sell leases off the Atlantic Coast and in the eastern Gulf of Mexico.