Generate a correctly punctuated version of the following text: Already earlier in the day Republicans had refused to attend the Senate Environment and Public Works Committees markup of Senators John Kerrys DMass and Barbara Boxers DCalif important climate bill Clean Energy Jobs and American Power Act
Already earlier in the day, Republicans had refused to attend the Senate Environment and Public Works Committee's markup of Senators John Kerry's (D-Mass.) and Barbara Boxer's (D-Calif.) important climate bill (Clean Energy Jobs and American Power Act).