Mr Trump also abandoned his trade base, where he made rhetoric rather than concrete action. Yes, he abandoned the trans-pacific partnership (TPP), but Hillary Clinton would do the same. He had thought about dropping the north American free trade law (Nafta), but that could be just a negotiating tactic. He threatened to impose a 50 per cent tariff on goods from China, Mexico and other us trading partners, but failed to do so. The proposal for border adjustment taxes was almost forgotten. Gasoline sales in the United States are mainly due to competitive gasoline prices and rising fuel efficiency, with a high seasonal impact. Population and cultural factors are also important factors that influence the trend of gasoline consumption in the United States, according to Jill Mislinski, an analyst with Advisor Perspectives. The general value form, while the general value form is not equal to the local value form. The practice of value must be determined in a certain category.