WATCH: Lawmakers Call for Tougher Gun Control

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ORLANDO, F.L. (WOLO) — The nation continues to come together, as thousands send their thoughts and prayers to Orlando following the tragic nightclub shooting.

When a tragedy such as this shakes our nation, it’s common for people to start to question who exactly is getting their hands on guns.   Now that same question is ringing true on Capitol Hill.   Chaos erupted on the House floor Monday after a moment of silence for the victims of the Orlando attack.  U.S. Rep. Jim Clyburn tried to raise a parliamentary inquiry and ask about the status of three Democrat gun control proposals in the chamber.  The inquiry comes just days before the one year anniversary of the Charleston church shooting.   Representative Clyburn was repeatedly cut off by Speaker of the House, Paul Ryan.

As the gun debate peaks, so does the demand for guns.

Shares of gun maker stocks surged nearly ten percent in the aftermath of the tragedy at Pulse.   Background checks tend to increase following these types of mass shootings due to the number of gun sales.  The highest number of background checks was following the San Bernardino shooting back in December.   Officials say 2016 is on pace to break that record.

Mass shootings here at home are becoming an all too familiar American reality.  A new study shows from 1966 to 2012, nearly one third of the world’s mass shootings took place in the United States.

The study defines a “mass shooting” as a shooting that kills four or more people.

By that definition, we’ve seen 136 mass shootings in the first 164 days of the year.

The deadliest mass shootings in U.S. history include:

1.  June 12, 2016: Pulse Night Club, Orlando, FL: 49 killed
2. April 16, 2007: Virginia Tech, Blacksburg, VA: 32 killed
3. December 14, 2012: Sandy Hook Elementary, Newtown, CT: 27 killed
4. October 16, 1991: Luby’s Cafeteria, Kileen, TX: 23 killed
5. July 18, 1984: McDonald’s, San Ysidro, CA: 21 killed
6. August 1, 1966: University of Texas, Austin, TX: 18 killed
7. December 2, 2015: Inland Regional Center, San Bernardino, CA: 14 killed
8. August 20, 1986: Edmond Post Office, Edmond, OK: 14 killed