State Attorney General Jerry Brown joined a legal challenge Wednesday to Pleasanton's 13-year-old limit on housing construction, arguing that the East Bay community is defying state housing laws and adding to urban sprawl, vehicle use and greenhouse gas emissions. "Pleasanton's draconian and illegal limit on new housing forces people to commute long distances, adding to the bumper-to-bumper traffic along (Interstates) 580 and 680 and increasing dangerous air pollution," Brown said in a statement after filing suit in Alameda County Superior Court. He said Pleasanton's housing shortage will worsen if the city adopts a revised general plan that calls for more...