Leaders agreed that warming must be stopped, but few specifics were reached on how to reduce greenhouse-gas emissions.
Ten Northeast states already have their own greenhouse-gas emissions regime. It's one model for the federal plan.
The road to passage of a top Obama priority will be even steeper in the Senate.
The measure, which calls for the most striking government intervention in energy use since 1975, is up for a vote Friday.
A successful vote Friday could give the administration momentum on its biggest priority: healthcare reform.
With competing bills in the House and Senate, Democrats struggle to agree on key climate and energy reforms.
Lawmakers craft a bill that will move the US to a far cleaner energy policy.
Backers say the agreement with the United Arab Emirates is a model for other countries in the region. But critics worry about the UAE's ties with Iran.
The compromise measure would mandate reductions in greenhouse-gas emissions and require greater use of renewable energy. The Senate could be a major stumbling block.
Agency’s move lays the foundation for expanding US regulation of thousands of companies.