By a 74-20 margin, the U.S. Senate approved a resolution Monday guaranteeing lawmakers a 15 percent gratuity for all bills containing eight provisions or more. 'Some of the bills around here run into the billions,' U.S. Sen. Sam Brownback (R-KS) said. 'This is our way of making sure we don't get stiffed.' Later that day, Brownback received an $825 million gratuity on a $5.3 billion arms-appropriation bill he authored. 