The state’s congressional delegation is marking the one-month anniversary of the Boston Marathon bombings with a benefit for the One Fund at Legal Sea Foods in Washington. Mayor Tom Menino and Governor Deval Patrick were both invited, but neither can attend. (Menino because of health issues, and the governor because he’s scheduled to be in Ireland.) Otherwise, says Legal Sea Foods owner Roger Berkowitz, every member of the delegation has RSVP’d. The invitation lists suggested donations of $1,000 for friends, $5,000 for sponsors, and $10,000 for the host committee. “We’ll take whatever we can get,” Berkowitz told us. “It’s just a way for people in D.C. with a connection to Boston to help.” He said MSNBC host Chris Matthews and his fellow Holy Cross alum, Representative Jim Moran of Virginia, may attend, as well as House minority leader Nancy Pelosi.