Romney could have another pivotal vote in Senate

Republican Senator Mitt Romney could be a pivotal vote in the U.S. Senate again, this time for a possible investigation into a Ukrainian energy company with alleged ties to former Vice President Joe Biden. 

Republican leaders in the Senate have signaled renewed interest in Biden's connections to Burisma, and his son's appointment to their board. 

Speaking with reporters, Senator Romney questioned the necessity of a congressional probe, saying he didn't want the investigation to be used to muddy the presidential election.