Congress October 5, 2017 2:41 pm Democrats Push for Ban on ‘Bump Stocks' Push to ban accessories that increase the rate of fire semi-automatic rifles gains momentum in Congress. NBC’s Tracie Potts reports. US & World Videos 1:02 20% of nurses to leave field within 2 years 1:36 WATCH: Some of the most talked about looks at the Met Gala 2:23 Climate change is moving Tornado Alley and driving more tornado outbreaks 1:47 Reese Witherspoon and Ryan Phillippe's daughter Ava calls out body shamers 1:41 Trump fined additional $1,000 for gag order violation and threatened with jail