The House Financial Services Committee called a hearing in which several cryptocurrency executives discussed the nascent digital ecosystem.

When President Biden signed the $1.2 trillion Infrastructure Investments and Jobs Act last month, he also approved provisions that tighten federal oversight of cryptocurrency. During debate in August, however, some lawmakers — including Sen. Ted Cruz (R-TX) — noted that the definition of the term “broker” in the text of the bill was highly unclear.

The Wednesday testimonies from six cryptocurrency executives come one month after Congress approved the new regulations.