The motion, put forward by Senate Majority Leader Chuck Schumer, would have reauthorized the Assault Weapons Ban, which first passed in 1994 and expired 10 years later. The US has recorded the highest number of mass shootings for the second year in a row.
The Constitution was designed to make change difficult because the founders feared a strong government. It’s unfortunately a design feature. It’s why it’s harder to actually address a problem instead of preserving the status quo.