From The Denver Post (Allison Sherry):
Salazar is expected to broadly announce his departure Wednesday. He has told President Barack Obama that he intends to leave his job by the end of March. Salazar, 57, will have served a little more than four years in Obama’s cabinet after being plucked from his beloved U.S. Senate seat serving Colorado in 2008.
His decision on whether to stay on at the helm of Interior or return to Colorado — and likely the less-glamorous but more-lucrative private sector — has been weighing on Salazar for a long time.
The president and the vice president have indicated they would like him to stay on at Interior. Obama, at a campaign event in Pueblo last year, called Salazar “one of the finest senators that the state of Colorado ever had, who is now doing a great job looking after the natural resources of this beautiful country of ours.”[...]
“As I think about my role as secretary of the Interior, it is perhaps the most wonderful job of any cabinet position in the United States,” Salazar said in December. “I would not trade it for attorney general or Housing and Urban Development or Transportation because I would find those jobs a little boring.”
But the pull of family obligations — he and his wife are primary caretakers of their 5-year-old granddaughter who has autism and is enrolled in a special school — was too great to commit to four more years, Salazar’s office said…
Salazar has said in his four years he is most proud of improving the relationship the federal government has with American Indians, cleaning up the oil and gas program after former departments were plagued with scandal and nepotism, and broadening a clean energy agenda.
The secretary established seven new national parks and 10 new wildlife refuges. He also launched 18 utility-scale solar energy projects on public lands. Before 2009, there were hundreds of pending applications but no construction projects approved.
He has also dealt with several natural and environmental disasters, including the explosion of a BP-operated deep water oil well, Deepwater Horizon, in the Gulf of Mexico in April 2010…
In an April 2012 speech at the National Press Club, he called House Republicans “charter members of the Flat Earth Society” who lived in an imaginary energy world of “fairy tales.” “It’s a place where up is seen as down, where left is seen as right, where oil shale seems to be mistaken every day in the U.S. House of Representative for shale oil, where record profits justify billions of dollars in subsidies,” he said.