Is it permissible for me to study American law and obtain a diploma and practice it in the the United States of America, or should I be a teacher of American history, or should I leave to study in Dar al-Islam?

Living in Muslim lands is better and further removed from tribulations, and migrating to them is obligatory if a Muslim cannot openly practice his religion or fears tribulations for himself. We advise seeking suitable employment and stable residency in Muslim countries. If that is not possible, we recommend working in teaching history, as it is further removed from Sharia violations than studying or working with American positive law. When the first solution becomes feasible, it is the best for your faith.