Romney will vote to approve subpoena in Senate committee's Hunter Biden probe

Sen. Mitt Romney is backing a new Senate probe involving Vice President Joe Biden and his son Hunter that could be a thorn in the side of the former vice president as he campaigns for the White House.

Romney had expressed reservations on whether to join with the rest of the Republicans on the Senate Homeland Security Committee on an expected vote next week to subpoena documents over concerns the investigation may appear politically driven.