“A recent solar energy boom in Texas and other states could be hobbled, critics warn, if a federal agency agrees to levy taxes or other protective measures on solar products made abroad. The U.S. International Trade Commission is scheduled to hold a hearing Tuesday to consider imposing a tariff or price floor on imports of solar panels and cells to help domestic manufacturers compete. But opponents hope to convince the commissioners that protectionist policies would harm the bulk of the industry that works with solar panels and cells but doesn’t manufacture them.”