The agency called on North Korea to "refrain from actions that further destabilize the region."
A defense official said two missiles were launched into the Sea of Japan.
Cory Gardner called the new sanctions on North Korea a reversal of failed policy.
The sanctions come after North Korea's rocket launch last week.
North Korea sanctions, energy legislation and nutrition labeling fights are also on tap.
Satellite surveillance shows the groundwork being laid for a launch of some kind.
It would block North Korea's access to hard currency following a claimed nuclear test.
“We cannot afford reckless, imprudent publicity stunts that risk war."
South Korean President Park Geun-hye is demanding an apology from the North.
North Korea told its front-line troops “to be fully battle ready,” according to state media.
Menendez and Graham hope added sanction authority would give the US "diplomatic leverage."
Hyon Yong-chol was reportedly executed by anti-aircraft guns before a crowd of hundreds.
Kim Dong Chul, 60, admittted to "unpardonable espionage" against North Korea's government.
The United Nations Security Council just imposed new sanctions on the country.
Recent weapons tests have sparked worldwide alarm.
Pyongyang could start recovering spent fuel in the coming weeks and months.
Many worry the planned launch is actually a ballistic missile test.
The student was reportedly detained Jan. 2.
Republicans will also decamp to Baltimore for their annual retreat.
The country has said it will launch a long-range rocket, in violation of international law.
State Department press secretary John Kirby said troops were "ready for action."
“They’re two rogue nations," warned Rep. Ted Poe.
An American cyberattack on North Korea half a decade ago was fruitless overall, sources say.
Leaders of the House Foreign Affairs Committee offered the bill in light of the Sony Pictures hack.