Despite America's renewed outcry against gun violence, U.S. Senators on Monday failed to pass four amendments that would have tightened the country's firearm regulations.

AP/Charles Krupa - apimages.com

In the wake of the Pulse nightclub mass shooting that left 50 people dead, politicians drafted measures to curb gun violence including: increasing national background checks, closing the gun show loophole, and creating "a judicial review process to keep a person on a terror watch list from buying a gun," according to USA Today.

After the Senate failed to pass these proposals on Monday afternoon, online conversation was dominated by allegations of outsize influence by gun lobbyists.

If you want to get a sense of just how munch money your senator is receiving from gun lobbyists, you can use this widget cited by Vox using data from the Center for Responsive Politics.

For a quick reference, here's a ranking of the top ten senators based on who received the most money from lobbyists during the 2014 election cycle:

Vox.com / Center for Responsive Politics - voxmedia.com

And here's how each of them voted on Connecticut Senator Chris Murphy's amendment to close the gun-show loophole on Monday.

Watch: Here are the Faces Who Just Voted Against Background Checks.