Regulatory activity in the U.S. picked up in April, with eight new petitions filed to the ITC vs. six in the prior two months. Admittedly though that includes the assessment of the revised KORUS trade review, and the year-to-date total of 27 cases is unchanged on a year earlier. New anti-dumping petitions remain subdued, with just one new case filed in relation to quartz countertops from China. That case may have been anticipated by suppliers, with imports in April likely down 36% from their February peak. New anti-dumping cases will likely be withheld until the state of the section 2...