From the article:
There is no Egyptian law against converting from Islam to Christianity, but in this case tradition takes precedent. Under a widespread interpretation of Islamic law, converting from Islam is apostasy and punishable by death — though killings are rare and the state has never ordered or carried out an execution on those grounds.
Most Muslims who convert usually practice their new religion quietly or leave the country. Egypt is overwhelmingly Muslim. Only 10 percent of the 76 million population is Christian and converts are typically ostracized by their families. If the conversion becomes known, they may receive death threats from militants or harassment by police, who use laws against "insulting religion" or "disturbing public order" to target them.
Is it OK for members of the US judiciary to decide cases based on the "cultural customs and traditions" of foreign-born citizens. For example, should honor killings be permitted within the Muslim community?