Exporting mezcal by developing your own brand; some consideration: https://www.oaxacamezcaltours.com/mezcalarticles/category/exporting-mezcal-importing
Cocktails with Mezcal the New US Craze: https://www.nytimes.com/2018/07/05/dining/drinks/classic-cocktails-mezcal.html?module=WatchingPortal®ion=c-column-middle-span-region&pgType=Homepage&action=click&mediaId=thumb_square&state=standard&contentPlacement=7&version=internal&contentCollection=www.nytimes.com&contentId=https%3A%2F%2Fwww.nytimes.com%2F2018%2F07%2F05%2Fdining%2Fdrinks%2Fclassic-cocktails-mezcal.html&eventName=Watching-article-click
Mezcal in the US makes its mark in Forbes (online) magazine: https://www.forbes.com/sites/karlaalindahao/2018/04/19/best-mezcals-to-try-this-year-2018/#54e84a59463f
Mezcal Crawling in LA (April 12, 2018): http://www.latimes.com/food/dailydish/la-fo-dr-mezcal-crawl-ulises-torrentera-20180414-htmlstory.html
Information dealing with statistics of Mexican spirit imports abroad:
Note that some brands listed are not particularly good, or are distilled / distributed by individuals whose motivation for producing and selling is purely profit. It's important to ask someone in the know about the producers' / importers' personalities if motivation is a consideration, prior to purchasing Mezcal in the USA.