a national hotel chain signs all its contracts and begins construction. in the meantime, the planning board decides to reduce heights of buildings (below the height of the hotel's plans) and this is applicable to any building not yet completed. the hotel chain descends on city hall and threatens to sue. what is the planner to do? any advice, legal recourse, etc. would be very appreciated. please email or post a reply message. thank you very much to anyone who can help.