WASHINGTON — Pot. Cannabis. Hemp. Weed. Grass. The herb takes many names. But in the nation’s capital, where the marijuana lobby (search) was once the recreational diversion of Playboy Magazine's Hugh Hefner, pro-pot special interest groups have crystallized the divergent issues behind the plant and gained a seemingly unified voice. ________________ Puff, Cough, Puff, Cough________________ "It’s a no-brainer. It makes no sense putting old and sick folks in jail for an herb that makes them feel better," said Bruce Mirken, spokesman for the Marijuana Policy Project (search), which was established in 1995 by Rob Kampia, a former mainstay at the...