(CNN) Days ahead of what have been billed as the final round of China and US trade talks, President Donald Trump tweeted Sunday that he would be increasing tariffs on most Chinese exports to the US to 25%.

For 10 months, China has been paying Tariffs to the USA of 25% on 50 Billion Dollars of High Tech, and 10% on 200 Billion Dollars of other goods. These payments are partially responsible for our great economic results. The 10% will go up to 25% on Friday. 325 Billions Dollars.... — Donald J. Trump (@realDonaldTrump) May 5, 2019

For the better part of a year Trump has heralded the benefits of his tariffs, claiming that foreign companies and countries pay billions of dollars into the US Treasury.

Twice on Sunday, the President claimed that China is paying the cost of these tariffs and that "(t)ariffs paid to the USA had little impact on product cost, mostly borne by China." Trump also claimed that tariff payments are "partially responsible for our great economic results." But there is little evidence of either point.

Facts first: US consumers bear the cost of these tariffs, not China or any other foreign country, and studies have found that the tariffs have harmed the US economy, not helped.

So far, Trump has imposed tariffs on all foreign washing machines and solar panels, steel and aluminum from most every country, and hundreds of billions of dollars of Chinese imports to the US.

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