Liz Johnson, a spokeswoman for Romney, said Friday that in a committee vote he would support the subpoena — which is expected to request documents and an interview with former Blue Star Strategies consultant Andrii Telizhenko — after getting assurances from Sen. Ron Johnson (R-Wis.).

“Senator Romney has expressed his concerns to Chairman Johnson, who has confirmed that any interview of the witness would occur in a closed setting without a hearing or public spectacle. He will therefore vote to let the Chairman proceed to obtain the documents that have been offered,” Johnson said.