Gary Schmitt, a former Reagan Administration official now at the American Enterprise Institute, said he believed Manafort’s ties merit extra scrutiny.

“If Trump is to be given access to sensitive intelligence, which can’t help but implicitly involve even more sensitive information about ‘sources and methods,’ then it’s imperative that any campaign staff who have had commercial ties with foreign governments and politicians not be given access as well until they have gone through a full, thorough background check — not the typical perfunctory review,” he said.

“Given his dubious foreign connections, it’s fair to assume that many in the intelligence and national security community would be extremely wary of him handling or receiving material at even the lowest level of classification,” said Adam Blickstein, a former aide to former Obama defense secretary Robert Gates.