WASHINGTON (AP) — Heather Zichal admits her job is unfinished.
The architect of President Barack Obama's climate change plan, Zichal left the White House this month after five years as a top adviser on energy and climate change.
Her departure comes as the Environmental Protection Agency moves ahead with the linchpin of the president's climate plan: emissions limits for new and existing power plants to curb greenhouse gases blamed for global warming.
Zichal says she has not decided on her next job, though it will involve clean energy.
Sen. John Barrasso of Wyoming said Zichal's departure does not "change the fact that this White House is clearly committed to continuing to wage a war on coal over the next three years." Zichal's deputy, Dan Utech, replaced her.