Senator Susan Collins, a leading moderate Republican in Congress, warned against an intolerance of differences within her party and pushed back at intraparty attacks from the right against Senator Mitt Romney and Representative Liz Cheney. #News #Reuters #MittRomney #SusanCollins #LizCheney Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en