It seems I was too modest on behalf of Finnish immigrant ancestor influence on American history, John Morton wasn't merely the last person to sign the Declaration of Independence, but the one casting the deciding vote on whether the United States declared itself independent at all.

The Pennsylvania delegation was split between two votes for independence by Benjamin Franklin and John Wilson, and two votes against independence by John Dickinson and Robert Morris, and John Morton cast the deciding vote, infact deciding that the United States went it's separate way.

https://www.iltalehti.fi/ulkomaat/a/27ca93b0-ffc7-4293-b26f-121531618f86

History