FILE - In this March 12, 2019, file photo, a motorist crosses the Irish border in Middletown, Northern Ireland. With Brexit due on Oct. 31, 2019 and a costly no-deal a possible outcome, experts still do not know, or are reluctant to say, exactly what checks are likely at the Irish border. Nevertheless, British Prime Minister Boris Johnson remains convinced that a Brexit deal can be sealed with the EU in a few weeks. (AP Photo/Peter Morrison, File)