The U.S. Postal Service has decided to cancel a program which allowed thousands of children to receive letters from Santa with North Pole postmarks. Postal Service officials said they are tightening rules nationwide because a volunteer in the Maryland Operation Santa program turned out to be a registered sex offender. Program volunteers in North Pole, Alaska, are likening the Postal Service to the Grinch who stole Christmas for the decision. But one post office spokesperson said dealing with the tighter restrictions is not feasible in Alaska. “It’s always been a good program, but we’re in different times and concerned for the privacy of the information,” Pamela Moody said.