Are mail-in ballots and automatic voter registration a threat to election integrity?

Context

Mail-in voting and automatic voter registration are two election administration policies that have become increasingly polarized in American politics. Supporters argue they increase voter access and participation, while critics raise concerns about ballot security, voter verification, and election integrity. The debate intensifies during election cycles as states adopt or restrict these practices, with recent developments involving USPS rules and state-level legislation reshaping how Americans cast ballots.