U.S. Senator Dave McCormick, a former Bridgewater Associates CEO, has been revealed as Congress's largest Bitcoin ETF investor.McCormick has made investments of over $1 million in the Bitwise Spot Bitcoin ETF, ranking sixth in total assets.His bullish stance on digital assets has earned support from Coinbase CEO Brian Armstrong and may have influenced his tight race.Other lawmakers, like Marjorie Taylor Greene and Senator Steve Daines, have also shown interest in Bitcoin ETFs.