The preliminary determination directs U.S. Customs and Border Protection to require cash deposits for the duties on all new imports as well as softwood products imported over the past 90 days. To remain in effect, however, the duties need to be finalized by Commerce and then confirmed by the U.S. International Trade Commission after an investigation that includes testimony from both sides. In response, the Canadian federal government indicated that it was exploring the possibility of banning United States coal from being exported through Canadian ports and imposing a retaliatory tariff on lumber exports from Oregon. By November 2017, the U.S. International Trade Commission decided to levy heavy countervailing and anti-dumping duties on lumber imports, citing that the U.S. industry has been harmed by unfair practices.