(Reuters) -The United States is proposing annual approvals for exports of chipmaking supplies to Samsung Electronics and SK Hynix's China-based factories, Bloomberg News reported on Monday.

Officials in the U.S. Commerce Department last week presented to Korean counterparts a "site license" idea to supplant indefinite authorizations the chipmakers secured under the previous administration, the report said, citing unidentified sources.

Reuters could not immediately verify the report.

(Reporting by Rajveer Singh Pardesi in Bengaluru)