Sen. Patty Murray calls the suspected leak a "serious concern."
The chamber rejected an amendment to block a proposal to lower the minimum driver age.
The bipartisan Common Sense Nutrition Disclosure Act cleared a key House panel Wednesday.
Republicans and Democrats are looking to roll back the FDA's menu labeling requirements.
The bill will get a markup in the next few weeks.
Republicans turned to the seldom-used Congressional Review Act to disapprove the rule.
Opponents say the bill puts asbestos victims at risk.
The budget deal contains a provision that allows government debt collectors to robocall cellphones.
It is one of dozens of amendments to the $325 billion infrastructure funding bill.
The new rules aim to cut carbon emissions from future power plants.
Regulators are coming under scrutiny for holding an increasing number of closed-door meetings.
Salmonella was the leading cause of foodborne illnesses from 2010 to 2014.
A battle over birth control access would be a sequel to the landmark Hobby Lobby case.
But legalization advocates are focused on passing ballot initiatives elsewhere.
Sen. Bernie Sanders (D-Vt.) is looking to end the long-time federal prohibition on pot.
The proposal transfers authority from the GSA to the transportation department.
Sen. Sherrod Brown says some of the lunch room's staff is homeless.
Sen. John Thune said it couldn't get past Obama's veto pen.
Find out what's in Thursday's edition of the Federal Register.
It is a significant defeat for the pro-marijuana movement.
A new small business report documents rules from agencies that evade public scrutiny.
Oppponents of the "Waters of the U.S." rule were three votes shy in the Senate.
A new report reveals shortcomings by federal agencies to address the health risks of climate change.
The Global Anti-Poaching Act would increase the penalties for wildlife traffickers.