Complex sentence: There was, however, significant tension between Anglicans and Roman Catholics at the time (as reflected in the Test Act for public office) and even today, the Act of Settlement 1701 still prohibits Roman Catholics from becoming English monarchs.
Split into simpler sentences: There was, however, significant tension between Anglicans and Roman Catholics at the time (as reflected in the Test Act for public office). Even today, the Act of Settlement 1701 still prohibits Roman Catholics from becoming English monarchs.