Limit access to most secret US documents, Senate intel panel head says

FILE PHOTO: U.S. Senator Mark Warner, Democrat of Virginia and Chairman of the Senate Select Committee on Intelligence, holds a hearing about worldwide threats, on Capitol Hill in Washington, DC, U.S., April 14, 2021. Saul Loeb/Pool via REUTERS/File Photo

WASHINGTON (Reuters) - Too many people have access to the U.S. government's closest secrets and a central entity should oversee the classification process, the chairman of the Senate Intelligence Committee said on Sunday, addressing leaks of documents in an online chat group.

A U.S. Air National Guardsman was charged on April 14 with leaking classified documents online in what is believed to be the most serious U.S. security breach since more than 700,000 documents, videos and diplomatic cables appeared on the WikiLeaks website in 2010.