1. It allows members to accept donations from fossil fuel companies.
2. It was not empowered to create a plan to transition the U.S. away from fossil fuels within the 12-year timeframe that the Intergovernmental Panel on Climate Change says is necessary to limit global warming to 1.5 degrees Celsius above pre-industrial levels.
3. It does not mention combining that transition with a push for greater economic and racial justice.

The activists also criticized the new committee for lacking subpoena power, a power that previous select climate committees did have.

"Democratic leaders had an opportunity to embrace young people's energy and back the #GreenNewDeal, but they failed us yet again," Sunrise Movement co-founder Varshini Prakash said in a statement. "This committee is toothless and weaker than the first Climate Select Committee from a decade ago, and it does not get us meaningfully closer to solving the climate crisis or fixing our broken economy."

"Progressives like me who understand how the system works have every confidence that we'll be able to do it within the existing system," Democratic Virginia Representative Donald McEachin told POLITICO in an in-depth article on the Democrats' climate plans. "Energy and Commerce is my primary pick because that's the committee that's really going to dig in and do what these young progressives are looking for."

The select committee will be led by Kathy Castor, a Florida Democrat who has not backed the call for a Green New Deal. It will have until March of 2020 to submit policy recommendations to other committees and will have nine Democratic members and six Republican members. Its members have not yet been selected.

"We need all voices. But make no mistake about it, we simply don't have time to tread water," Castor told POLITICO. Castor has a lifetime score of 93 percent from the League of Conservation Voters, but some progressives are concerned by a Sludge report that she and her husband have between $50,001 and $100,000 invested in utility companies that mostly generate energy from fossil fuels.

Meanwhile, New Jersey Democrat and Energy and Commerce Chairman Frank Pallone said his committee would work with the Natural Resources and Science committees, as well as the new climate committee, on climate action. The first hearing he plans to convene will focus on the economic and environmental impacts of climate change.

"We're all progressives," Pallone said of Natural Resources Chairman Arizona Democrat Raúl Grijalva and Science Chairman Texas Democrat Eddie Bernice Johnson. "I think they'll be happy to see what we do because the chairs of the committees are progressive," he told POLITICO.

On the more conservative side of the party, Representatives are concerned about how to balance economic growth and environmental concerns.

"We've got to find a way that we can accommodate our goals and not be seen as anti-business," Texas Democrat Henry Cuellar told POLITICO. "A lot of the oil-and-gas state folks feel the same way."