Separated at birth

  [Edward Chapman as Mr. Peachy in The October Man (dir. Roy Ward Baker, 1947). William Barr as himself. Click either image for a larger view.]

Two criminals. There may be a better match, but finding one would have meant more time looking at William Barr. See also this Mucinex DM commercial.

Also separated at birth
Claude Akins and Simon Oakland : Ernest Angley and Joaquín “El Chapo” Guzmán : Nicholson Baker and Lawrence Ferlinghetti : Bérénice Bejo and Paula Beer : Ted Berrigan and C. Everett Koop : David Bowie and Karl Held : Victor Buono and Dan Seymour : Ernie Bushmiller and Red Rodney : John Davis Chandler and Steve Buscemi : Ray Collins and Mississippi John Hurt : Broderick Crawford and Vladimir Nabokov : Ted Cruz and Joe McCarthy : Benedict Cumberbatch and Michael Gough : Henry Daniell and Anthony Wiener : Jacques Derrida, Peter Falk, and William Hopper : Adam Driver and Henri Gaudier-Brzeska : Charles Grassley and Abraham Jebediah Simpson II : Elaine Hansen (of Davey and Goliath) and Blanche Lincoln : Barbara Hale and Vivien Leigh : Pat Harrington Jr. and Marcel Herrand : Harriet Sansom Harris and Phoebe Nicholls : Steven Isserlis and Pat Metheny : Colonel Wilhelm Klink and Rudy Giuliani : Ton Koopman and Oliver Sacks : Steve Lacy and Myron McCormick : Don Lake and Andrew Tombes : Markku Luolajan-Mikkola and John Malkovich : William H. Macy and Michael A. Monahan : Fredric March and Tobey Maguire : Jean Renoir and Steve Wozniak : Molly Ringwald and Victoria Zinny