A group of Connecticut religious congregations is calling on state officials to allow illegal immigrants to get driver’s licenses and register their vehicles. More than 400 activists gathered Sunday in New Haven to launch a campaign supporting legislation that would expand access to licenses. Several state lawmakers attended and pledged to back a bill during the upcoming legislative session. Congregations Organized for a New Connecticut said about 54,000 Connecticut residents who must drive to work or take children to school cannot get licenses because they are in the country illegally. Advocates say allowing immigrants to have licenses would improve safety on the roads because their driving skills would be tested. Supporters also say the state would get more revenue from the fees paid by immigrants.