Mark Udall urged his colleagues to pass the bipartisan Marketplace Fairness Act, a common-sense bill to level the playing field for Main Street businesses and Colorado's brick-and-mortar retailers. The proposal would end the competitive advantage online-only retailers have over local businesses by authorizing states to require that out-of-state retailers collect local sales taxes that are already owed under current law. The legislation would ensure that Colorado Main Street retailers are not penalized for creating jobs in Colorado.

Mark Udall, who serves on the U.S. Senate Energy and Natural Resources Committee, pressed Dr. Ernest Moniz, a professor at the Massachusetts Institute of Technology and President Obama's nominee for Secretary of Energy, on his vision for the National Renewable Energy Laboratory (NREL) in Golden, which has developed innovations in renewable energy technologies and generated over 5,500 jobs in Colorado. Udall also addressed climate change as a priority for the U.S. Department of Energy.

On March 28, ABC 7 discussed Udall's Brown Canyon National Monument proposal. Public meetings will be held on the proposal on April 13 and May 18, 2013.

On March 19, 2013, Mark Udall delivered a speech on funding America's national parks in the face of budget constraints. Udall, the chairman of the U.S. Senate National Parks Subcommittee, also discussed the need to preserve the heritage and condition of the nation's expansive parks system for future generations to protect and experience.

Mark Udall's bipartisan and deficit-neutral amendment to increase the funding for fighting wildfire and modernizing the aging air tanker fleet in the 2014 Senate Budget passed by voice vote without objection. The amendment, co-sponsored by Sen. John Barrasso (R-Wyo.), increases the federal budget for wildfire mitigation and firefighting efforts across Colorado and the West by $100 million in 2014.

Mark Udall spoke on the floor of the U.S. Senate to oppose amendments aimed at slashing funding for the Defense Department's (DOD) pursuit of alternative energy, alternative fuels and energy efficiency. Udall, who serves on both the Senate Armed Services and Energy and Natural Resources committees, has championed the Defense Department's pursuit of national security through energy security, including successfully fighting last year to maintain Defense Department funding of these critical programs and investments. The U.S. Department of the Navy recently awarded Udall the U.S. Navy's Distinguished Public Service Award based on his leadership on these issues.

Mark Udall, who serves on the U.S. Senate Select Committee on Intelligence, pressed the heads of the CIA and other intelligence agencies today on declassifying the committee's report on the CIA's detention and interrogation program and correcting the inaccurate public record on the effectiveness of the program. Udall also pressed new CIA Director John Brennan on recent remarks attributed to unnamed agency officials disputing many of the report's findings, and pushed for an updated deadline for the CIA to provide its comments to the committee on the committee's report.

Bloomberg News aired a story with a warning from U.S. Senator Mark Udall and Colorado Attorney General John Suthers to Colorado consumers, asking them to beware of tax-preparation fraud, a common scam where tax preparers change return documents to increase the return amounts and steal the refunds.

Mark Udall spoke with Sally Jewell, President Obama's nominee to head the U.S. Department of the Interior, during her confirmation hearing. As a member of the U.S. Senate Energy and Natural Resources Committee and chairman of the National Parks Subcommittee, Udall questioned Jewell about her vision for managing our public lands and how she would confront the challenges we face in Colorado and the West.

Mark Udall spoke on the U.S. Senate floor about congressional oversight of intelligence programs, our constitutional system of checks and balances, and CIA director nominee John Brennan.

During a full committee hearing of the U.S. Senate Energy and Natural Resources Committee, Udall questioned Gov. John Hickenlooper about natural gas development and highlighted the importance of balancing the economic opportunity against protecting the health and well-being of Coloradans.

Mark Udall pressed the chiefs of staff for the Army and the Air Force for Colorado impacts if sequestration is triggered and called on his colleagues both in the Senate Armed Services Committee and in Congress to work across the aisle to avert those blunt, automatic cuts.

Mark Udall introduced Gov. John Hickenlooper during a full committee hearing of the Senate Energy and Natural Resources Committee to explore the opportunities and challenges for increased natural gas development in the United States.

At a U.S. Senate Armed Services Committee hearing, Mark Udall questioned Secretary of Defense Leon Panetta and Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey on the Department of Defense’s response to the attack on U.S. facilities in Benghazi, Libya, and the findings of its internal review following the attack.

On January 31, 2013, Mark Udall questioned Secretary of Defense nominee, former Nebraska Senator Chuck Hagel, during a U.S. Senate Armed Services hearing.

On Jan. 24, 2013, Mark Udall went to the U.S. Senate floor to talk about why Congress should provide critical assistance to Colorado communities whose water supplies and infrastructure are threatened by the long-term effects of the High Park and Waldo Canyon fires.

Mark Udall introduces Raymond Moore to the U.S. Senate Judiciary Committee, calling him "the right man for the job" and encouraging the Senate to quickly confirm him to prevent harmful judicial backlogs in the Colorado's U.S. District Court.