Former federal prosecutors David Anderson and Sheila Armbrust, along with Kevin Rubino, returned to the law firm Sidley Austin, citing the firm's familiarity and teamwork as key reasons for their comeback. The US Supreme Court's recent decisions have significantly impacted administrative law by limiting agency authority and increasing uncertainty in regulatory schemes, allowing for more challenges to existing programs. Judicial scrutiny is rising regarding government administrations leveraging contracts to implement policy aims, potentially leading to challenges against such practices. The overturning of the Chevron deference principle by the Supreme Court has sparked a debate on whether courts or government agencies should have the authority to interpret unclear statutes, raising questions about expertise and decision-making in complex regulatory matters.