U.S. Republican seeks first subpoena in Hunter Biden probe

FILE PHOTO: Chairman of the Senate Homeland Security and Governmental Affairs Committee Ron Johnson (D-WI) questions Kirstjen Nielsen (unseen) on her nomination to be secretary of the Department of Homeland Security (DHS) in Washington, U.S., November 8, 2017. REUTERS/Joshua Roberts/File Photo

WASHINGTON (Reuters) - Days after Democratic presidential candidate Joe Biden scored a major win at his party's primary in South Carolina, a Republican U.S. senator is seeking the first subpoena in a probe of his son Hunter Biden's role at Ukraine gas company Burisma.

As Joe Biden's campaign picked up steam ahead of crucial Super Tuesday primaries on Tuesday, Senate Homeland Security Committee Chairman Ron Johnson told panel members that he will call a meeting to consider subpoenaing documents related to Hunter Biden's seat on Burisma's board, according to a letter from Johnson obtained by Reuters.