Report Highlights: Gun laws vary by state. Some states have such strict laws that it seems almost impossible to exercise the right to keep and bear arms within their borders. Hawaii has the strictest gun control in the U.S. due to its extreme purchasing and carry restrictions. California, Massachusetts, New Jersey, and New York round …Report Highlights: Gun laws vary by state. Some states have such strict laws that it seems almost impossible to exercise the right to keep and bear arms within their borders. Hawaii has the strictest gun control in the U.S. due to its extreme purchasing and carry restrictions. California, Massachusetts, New Jersey, and New York round …