The Department of Justice has issued grand jury subpoenas to local election officials in California, escalating its criminal investigation into the state's voter rolls. The move by the Trump administration signals a deepening clash with states over election administration practices.

The subpoenas are part of an ongoing effort by the administration to investigate claims that California's voter rolls contain thousands of non-citizens. This investigation comes just days before the midterm elections, raising concerns about the timing and potential impact on election integrity.

Sources familiar with the matter confirmed the issuance of the subpoenas to ABC News. The specific number of officials or counties targeted has not been disclosed, nor have the exact nature of the alleged discrepancies in the voter rolls.

This action by the Justice Department suggests a significant shift in how federal authorities are engaging with states on election matters. It raises questions about the extent of federal oversight in state-run election processes and the legal basis for such investigations.

The investigation into California's voter rolls has been a point of contention, with the administration asserting its intent to ensure the accuracy and legality of voter registration. Election officials in various states have previously expressed concerns about federal overreach into election administration, which is largely a state responsibility.

Past efforts by the Trump administration to investigate voter fraud or irregularities have faced scrutiny and legal challenges. The current probe into California's voter rolls is likely to draw similar attention and debate regarding the balance between federal investigative powers and state autonomy in conducting elections.

Further details about the scope of the criminal investigation and the specific allegations against the election officials are expected to emerge as the grand jury proceedings progress. The outcome could have implications for election security protocols and federal-state relations concerning election administration.

Unresolved questions remain regarding the evidence the DOJ possesses to support its claims of non-citizens on the voter rolls and the potential consequences for the targeted officials and the state's election system.