Allied Progress Action is a left-leaning advocacy group operated under the auspices of the “dark money” Sixteen Thirty Fund, a lobbying organization under the umbrella of the liberal philanthropic consultancy Arabella Advisors.  Founded in 2015, Allied Progress Action specializes in aggressive campaigns to elicit support for greater oversight of Wall Street and opposition to Trump administration nominees. 
Allied Progress Action is a project of the left-leaning advocacy group Sixteen Thirty Fund.  Critics contend that the Sixteen Thirty Fund, and the other funds managed by Arabella Advisors, operate as “dark money” because its projects do not disclose the standard tax returns made by independent nonprofit organizations, instead having Sixteen Thirty Fund report all project spending on a single return. 
Its website does not list any funding sources. 
Allied Progress Action sought to halt the Trump administration’s initial nominees to oversee the financial industry. As of September 23, 2019, its website highlighted the administration’s early 2017 potential nominees.  Allied Progress Action has prominently run a number of television ads against Trump nominees. 
The group launched a campaign in 2017 to stop Treasury Secretary Steve Mnuchin’s nomination.  The main thrust of the campaign was a video highlighting how Mnuchin’s former company OneWest foreclosed on a widow’s property.  OneWest was accused of lying to the woman and her deceased husband, though the New York Post reported that the claims are unproven. 
Founded in 2009, OneWest bought out a number of companies in financial distress and foreclosed on thousands of homes. In 2012, then-California Attorney General Kamala Harris (D) declined to prosecute OneWest for alleged legal violations, saying on the 2020 presidential trail that laws protected OneWest from proper oversight by her office.  Mnuchin denied any legal wrongdoing.