The crypto industry is urging Congress to approve a new digital asset tax bill—and claim that changing the legislation at all could risk derailing its chances of passage.

In a letter sent this week to the top-ranking Republicans and Democrats on the House Ways and Means Committee, the heads of three top industry trade groups—the Blockchain Association, the Crypto Council for Innovation, and the Digital Chamber—pressed lawmakers to quickly pass a bill that would change how rewards generated by crypto mining and staking are taxed.

The legislation, debated at a Ways and Means committee hearing earlier this month, would exempt assets derived via crypto mining and staking from a holder’s reportable income. Currently,…