What does not infringe mean?
"As a political gesture to the Anti-Federalists, a gesture highlighted by the Second Amendment's prefatory reference to the value of a well-regulated militia, express recognition of the right to arms was something of a sop. But the provision was easily accepted because everyone agreed that the federal government should not have the power to infringe the right of the people to keep and bear arms, any more than it should have the power to abridge the freedom of speech or prohibit the free exercise of religion."
- "To Keep and Bear Arms"