The American Blockchain Association sends a letter to Congress calling for the advancement of digital asset tax legislation On October 22nd, the Blockchain Association sent a letter to the leaders of the US House and Senate, calling for the promotion of digital asset tax legislation and proposing five policy principles. The association pointed out that approximately 67 million people in the United States hold or use digital assets, and current tax rules have increased the compliance burden on taxpayers. The five principles include: establishing a tax exemption threshold for small transactions, clarifying the taxation methods for mining and pledge rewards, protecting taxpayers' privacy, levying taxes based on economic substance, and formulating reasonable washing and selling rules.