Text Size:

The instant background check was designed to keep guns out of the hands of dangerous people.

But the system has flaws, and critics claim gun buyers with serious mental illness are clearing background checks undetected.

When does mental illness become a problem? Who among us has constitutional rights, and who should give them up?

For more information watch on Wednesday, Feb. 20.

Interactives

Check out our gun regulation and firearm death map and see if regulation prevents gun deaths.

Click through our interactive timeline to explore the evolution of the Second Amendment throughout history.

View how gun regulations differ in industrialized nations worldwide.

See the number of firearms and comparable firearm homicides in various countries here.

With the debate over gun control heating up, learn more about this controversial issue here.

Missing pieces - Dangerous holes in background checks