League of Women Voters, ACLU and Rutherford Institute File Amicus Brief Supporting Republican Representative Bost's Standing to Sue over Accepting Ballots Arriving After Election Day #ELB
electionlawblog.org
They disagree on the merits of Bost’s position, but this filing at the Supreme Court supporting standing for Rep. Bost is still notable. See also this interesting amicus brief from Professor Michael Morley.