May a Jew work for the IRS if his job will potentially include reporting on fellow Jews?

May a Jew work for the IRS if his job will potentially include reporting on fellow Jews?

May a Jew act as a clerk and construct legal documents which involve activities the Torah forbids, such as lending money with interest?

Watch a video shiur by Rabbi Nachman Wilhelm of onlinesmicha.com presenting two fascinating teshuvos from Harav Moshe Feinstein.