. >> senator hitchenson, i have to go. i have to leave the last word right there. but we have two more debates. >> oh, no, surely you're not going to let him get by with that without a response. >> senator hitchenson, i have to go. we have two more debates. >> that is absolutely false what he has said. i'm sorry i can't respond. >> we'll leave the last word there. senator bernard sanders, senator kay bailey hutchinson, thank you. >>> up next, we'll talk to former governor charlie chris. plus all a twitter, the debate was the most tweeted political event in history. we'll take a look at the highlights. >>> time for the "your business" entrepreneur of the week. andrew rosenwach is the fourth-generation owner of rosenwach tanks. you'll find his tanks on hundreds of new york city rooftops. today the tanks are shaped by hand with past century old tools. he says you don't throw out what works, you just build upon it. for more, watch "your business" this sunday at 7:30 on msnbc. welcome aboard! [ chuckles ] ♪ [ honk! ] ♪ [ honk! ] ♪ [ honk! ] ♪ [ male announcer ] now you'