The US International Trade Commission held a hearing on tariffs on silicon cells that was attended by SEIA and manufacturers QCells, Silfab, Heliene, Suniva, First Solar, and Canadian Solar. SEIA testified that the tariff rate quotas on imported cells should be raised significantly while some manufacturers argued that it be removed entirely or also raised significantly. First Solar and Suniva did not request changes, saying safeguards were working as they should.