Thomas Dawson, a New York-based partner at transatlantic law firm Drinker Biddle, notes that the Brexit will have little immediate impact in the U.S. for British and European insurers and re-insurers.   In the longer term, Dawson notes that ongoing US-EU "covered agreement" negotiations could be impacted, and that UK startups experimenting with new technology such as blockchain may become unencumbered by EU regulation.