UPDATE 1-US gas pipeline industry wants help beating back green groups

June 28 (Reuters) - The United States should help the natural gas industry push back against opposition by environmental groups to pipeline projects by adopting new regulations or laws that favor infrastructure, backers of the industry said at a conference this week. Suppliers in the United States, the world's biggest natural gas producer, have had a difficult time in recent years getting shipments to some regions, including fuel-hungry New England, as environmental lawsuits by states, green gro