Governors' Wind Energy Coalition Biden is pledging steep carbon cuts – but isn’t explaining how he got there Source: By ZACK COLMAN, Politico • Posted: Sunday, May 2, 2021 Several Republican, Democratic and committee offices on Capitol Hill said they had not been briefed by the Biden administration. President Joe Biden sits in the Oval Office of the White House. | Andrew Harnik/AP Photo White House officials have said the ambitious target to reduce U.S. emissions of planet-heating gases by 50-52 percent by 2030 was built on a rigorous analysis that laid out the pathways to success. But nearly a week later, no one outside the administration seems to have seen it.