During Donald Trump’s 90-minute presidential nomination acceptance speech at the Republican National Convention in July, the falsehoods flew so fast and thick that the most important fact-checking site didn’t even notice one of the most outrageous ones - maybe because his party has been repeating it for so long that it’s simply taken for granted.

Buried 4023 words into the 12,187-word address was the statement that after he signed the Tax Cuts and Jobs Act into law in 2017, the federal government “took in more revenues the following year than we did when the tax rate was much higher.” In fact, federal revenue remained level in nominal terms, and as a percentage of gross domestic product - the relevant measure - it fell a full percentage point. A 2018 analysis by the nonpartisan Congressional Budget Office estimated that the TCJA would end up costing the US Department of the Treasury $US1.9 trillion over 10 years.

Bloomberg Businessweek