Amendment II (1791)
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.
Infringe- Act so as to limit or undermine (something); encroach on: "infringe on his privacy".
1. To transgress or exceed the limits of; violate:
Obama called on Congress to pass legislation that included reinstating the assault weapons ban and restoring a 10-round limit on ammunition magazines.
So in fact what Barack Hussien Obama's bill that he tried to pass was an infringement on our civil rights to keep and bear arms. ALSO INFRINGING ON OUR PRIVACY AT THE SAME TIME WITH EXTENDED BACKGROUND CHECKS.