Boston Children's researcher denied U.S. entry has ties to Iran militia group

Boston Children’s Hospital said it has no new information on why an Iranian researcher slated to work at the hospital was denied entry, but reports from The Associated Press said the man had previously headed a student brand of a volunteer paramilitary militia group in Iran.Dr. Seyed Mohsen Dehnavi was a visiting research scholar on a J-1 visa coming to work for the hospital from Iran. But when he, his wife and three children arrived at Logan International Airport on Monday, they were deta