white house is looking for ways to achieve the president's goal of cutting u.s. greenhouse emissions by half, by the end of this decade. it is ambitious. as it looks for ways to combat growing skepticism abroad on the u.s. commitment to climate change. >> that proposed new rule coming a day after moderate senator joe manchin raised doubts about his support of president biden's social safety net package which contains historic investments in combatting climate change. the west virginia senator says he wants greater clarity about the impact the plan will have on the country's economy and the national debt, while also warning house progressives that holding the bipartisan infrastructure bill hostage won't get him to support -- won't get his support for the spending bill. >> the continuing delays in washington over two key pieces of president biden's agenda prompting worries that democrats could feel the impact at the polls. this as millions of americans are set to vote in key races today, setting the tone perhaps for next year's midterms. especially in virginia, where