Republican Sen. Cynthia Lummis.Tom Williams/CQ-Roll Call, Inc via Getty Images Republican Sen. Cynthia Lummis is Congress' resident cryptocurrency enthusiast. She' owns a large bitcoin stake and co-sponsored a significant crypto bill. The bill would help classify coins as either commodities or securities, and decide which agency should regulate them. Sen. Cynthia Lummis is known on Capitol Hill as the "Crypto Queen."The Republican from Wyoming has earned a reputation as a cryptocurrency educator in Congress, demystifying and advocating for the technology among her older colleagues.She's a self-described HODLer, crypto-speak for someone who invests in bitcoin as a way to get in before it takes over larger swaths of the financial system.