Democratic U.S. Sen. Bob Casey of Pennsylvania to seek 4th term

The controversy comes as the Senate race between incumbent Democratic Sen. Bob Casey and Republican challenger Dave McCormick has gone to a recount.

The Pennsylvania Supreme Court issued the latest — and likely final — ruling in the legal fight over mail-in ballots that may impact the results of the U.S. Senate election.

The secretary of state said the Pa. Senate race has gone into automatic recount. GOP candidate David McCormick has sued to stop officials from counting some mail-in ballots.