A Democratic senator says she won’t agree to quickly confirm two nominees to the Securities and Exchange Commission until they outline their views on whether regulators should rein in activist investors, stock buybacks and executive pay, the Wall Street Journal reported. In letters sent yesterday to a pair of nominees who advanced through the Senate Banking Committee this month, Sen. Tammy Baldwin (D-Wis.) says that she is standing up for workers and long-term shareholders by questioning current rules that she argues are too friendly to Wall Street. Her ultimatum could slow the confirmation of Democrat Robert Jackson and Republican Hester Peirce, because she won’t agree to an expedited vote this year without detailed answers.