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Sen. Lindsey Graham (R-SC) speaks during a press conference at the U.S. Capitol May 10, 2022 in Washington, DC.
Win Mcnamee | Getty Images
Sen. Lindsey Graham agreed Tuesday to accept service of a subpoena for his testimony before a Georgia grand jury investigating possible criminal meddling in the 2020 election by then-President Donald Trump.
But Graham, R-S.C., still retained his right to challenge the legality of the subpoena, a court filing…
