WASHINGTON (AP) — A group representing President Donald Trump's transition team says a memo in the hands of the General Services Administration should have stopped the agency from turning over tens of thousands of emails to the special counsel investigating Russian meddling in the 2016 election.

A lawyer for Trump for America said in a letter to GSA that a cache of transition emails the agency delivered last August to Robert Mueller's investigators was actually owned and controlled by the transition. The transition claims it believes a GSA official communicated that warning in a memo to Muelle...