President Donald Trump lashed out at Sen. Josh Hawley on Wednesday after the Republican's proposal to ban stock trading by members of Congress — and the president and vice president — won bipartisan approval to advance in a committee vote.

Sen. Rand Paul, R-Ky., urged Democrats to vote against the bill because it included an exemption for Trump and Vance. Sen. Bernie Moreno, R-Ohio, the original bill’s cosponsor, pulled his support when Hawley introduced the modified version, telling lawmakers during a hearing Wednesday “I have no idea what we’re voting for.”

A Republican on Capitol Hill has joined with majority Democratic support to advance a bill that could regulate how lawmakers trade stocks, and has drawn the ire of President Trump.