The FBI has issued a subpoena to the Arizona State Senate as part of an expanded federal investigation into the 2020 presidential election. The subpoena, delivered in recent days, targets records from the Senate's oversight of a controversial audit of Maricopa County's vote results. This marks a significant escalation in federal scrutiny of state-level election reviews.

Arizona's audit, conducted by private contractors, drew widespread criticism for its methodology and potential to undermine public confidence in election integrity. The Senate's involvement in overseeing this audit now places it at the center of federal investigators' attention. The Justice Department's interest suggests concerns about possible violations of federal election laws or interference with voting processes.

The development comes amid ongoing debates about election security and the legitimacy of the 2020 results. Federal prosecutors appear to be casting a wider net in their examination of efforts to challenge or overturn the election outcome. This investigation could have implications for how states handle election disputes and the role of legislative bodies in overseeing electoral processes.