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>> reporter: hes used that in tweets about kim jong-un. nuclear taunts on twitter scared some americans. a reminder that most voters disapprove of all the tweeting. now some lawmakers say they have warmd up to the tweets. when the president stays on message. >> the president tweeting habits, i havent been a fan until this week. >> other times its caused chaos in washington. like when the president seemed to reverse course on a surveillance bill vote. after lawmakers scrambled, trump tweeted a cl...