President Trump called the National Security Agency’s recently announced mass-deletion of call records “a disgrace” Tuesday, and appeared to link the purge with special counsel Robert Mueller’s investigation of possible campaign collusion with Russia.

The NSA said last week that it began deleting call records on May 23 from a three-year period beginning in 2015 after “technical irregularities” resulted in “the production to NSA of some [call records] that NSA was not authorized to receive.”

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