When the Franken campaign filed its initial lawsuit demanding access to the voter lists, it used as an example an 84-year-old woman in Beltrami County whose vote was supposedly rejected because she'd had a stroke, and therefore her signature on her absentee ballot did not match the one on file.
If you own or have signature power over an offshore bank account, you are required to file a special, annual, non-IRS Treasury form by June 30, giving details of the account.