President Trump on Monday offered to help a critically ill British child who has become a flashpoint in the U.K. debate over whether the government should have a say in individual matters pertaining to life and death. Trump tweeted his support for Charlie Gard, a 10-month old infant on life support due to complications from a mitochondrial disease. The controversy around Gard has engulfed the Vatican, which infuriated some on the right by not siding entirely with the parents who want to seek experimental medication in the U.S. or bring their child home to die. “If we can help little...