of the koch brothers who he recently described as un-american and today's l.a. times reports he noble the only one taking contain. accusing the koch's of masterminding for funneling dark money all over the country. senator mark begich. >> the billionaire koch brothers. >> just running it into the ground. >> leaving a mess. >> a lot of alaskans are losing jobs and i'm concerned about the drinking water. >> i don't go down and tell them what to do. >> charles koch responded to the criticism in a recent journal op-ed where he described the democrats attacks as character assassination. senator reid didn't seem the least bit bothered. >> most here say the koch brothers. i've made them a little more infamous and i'm glad i done that. they are rigging our political