WHYY By Rachel McDevittMay 11, 2021 Shown is the Pennsylvania Capitol in Harrisburg, Pa., Monday, March 22, 2021. (AP Photo/Matt Rourke) This article originally appeared on StateImpact Pennsylvania. — State lawmakers are asking the administrators of a regional cap-and-trade program to bar Pennsylvania’s entrance unless the legislature approves. But the nonprofit RGGI, Inc. doesn’t require legislative backing to admit a new state. All Republicans and one coal-region Democrat on the House Environmental Resources and Energy Committee voted recently to warn RGGI, Inc. against Gov. Tom Wolfâ...