Bernie Sanders and Elizabeth Warren are urging the U.S. Department of Labor under Donald Trump to withdraw a proposed rule allowing Bitcoin and other cryptocurrencies in retirement accounts.

Sens. Warren and Sanders are pressing the DOL to strike down a proposed rule that would open up 401(k) retirement plans to crypto.

Sanders and Warren push the Labor Department to block a rule opening 401(k) plans to crypto, citing Trump's $5B conflict of interest.