As states likely expand the use of mail ballots in response to the COVID-19 breakout, they need to also protect the integrity of mail ballots to prevent both the appearance of impropriety and actual fraud this November.  Lawyers Democracy Fund published a study last year by current Republican federal Election Assistance Commission(EAC) Commissioner Don Palmer (before he joined the EAC), describing some of the steps needed to protect the integrity of mail ballots and improve voter confidence in mail voting:

Yesterday, the U.S. Senate Committee on Rules and Administration held a hearing on the nomination of Donald Palmer to serve as a Commissioner on the Election Assistance Commission. This is a prestigious appointment for Mr. Palmer who has already had a career of prestige, integrity, and honor. Currently, Mr. Palmer wears multiple hats including serving as a fellow at the Bipartisan Policy Center. Mr. Palmer’s career in public service has been extensive, serving as a Naval Reserve Officer, serving as a trial attorney at the Department of Justice, serving as the Director of Elections in Florida, and acting as Secretary of the State Board of Elections in Virginia.