a federal appeals court temporarily blocked self regulatoryorganization finra from expelling alpine securities from the industry handing the brokerage firm a win as it seeks to challenge the constitutionality of finra’s enforcement powers the us court of appeals for the district of columbia ruled 21 in favor of the request by alpine securities and its affiliated clearing firm scottsdale capital advisors finra has sought to expel and penalize alpine securities for allegedly misusing customer funds and other misconduct