Omar Mateen called emergency dispatchers three times and posted internet messages from inside the Pulse nightclub.
Despite the quick action, the gun control efforts are not expected to achieve the votes needed for passage.
Loretta Lynch calls nightclub massacre "an act of terror and an act of hate."
Votes on four bills are scheduled for the Senate with 71 percent of Americans favoring new gun regulations, according to new poll.
The U.S. activist, who won a landmark court case for equal marriage, finds hope in a child's attitude to love.
President urges Congress to pass legislation to restrict access to semi-automatic weapons.
The ex-Oasis singer was responding to hooliganism between English and Russian football fans.
Omar Mateen is seen swearing and making light of the spill as he worked as a security guard.
Trump first called for surveillance of mosques in November, as well as a database of Syrian refugees entering the U.S.
The Orlando attack was the deadliest mass shooting in modern U.S. history and the worst assault in America on the LGBT community.
Republicans and the NRA are under pressure to respond to the worst mass shooting in modern U.S. history.
A local broadcaster said the message was posted in the men-seeking-men section of Craigslist in San Diego.
Faced with an unprecedented hate crime, gay bars are considering armed guards, pat-downs and bag checks.
Senator Chris Murphy vows to remain on the floor until his Republican colleagues compromise on two gun control issues.
Trump tweeted that he wants to discuss "not allowing people on the terrorist watch list, or the no-fly list, to buy guns."
Experts says his proposal for suspending immigration from places with a history of terrorism could have a legal basis.
After the worst mass shooting in U.S history, McConnell said he was open to suggestions from experts on legislation that could address the problem.
She could soon be charged in connection with the deadliest mass shooting in modern U.S. history.