evidence: Trump’s charitable contributions declined over the course of his presidency. He donated $1.8 million in 2017 and about half a million dollars in each of the next two years. In 2020, as many nonprofits intensified their calls for donations as they scrambled to help victims of the coronavirus pandemic and the associated unemployment, the Trumps reported giving no money to charity. Trump repeatedly promised that he would donate his $400,000 annual salary for each year that he served as president, and he generally contributed his salary to federal agencies. IRS rules say that taxpayers who give money to government agencies "solely for public purposes" can deduct those gifts as charitable contributions on their tax returns. Trump’s failure to take any charitable deduction in 2020 suggests that he didn’t donate his presidential salary that year — and that if he donated his salary in the two prior years, that represented most of his charitable giving each year. A spokesman for Trump did not directly respond to questions from The Washington Post about Trump’s lack of a charitable deduction for his salary donations in 2020 but did note that Trump previously said he gave money from his salary that year to the National Park Service and to the Department of Health and Human Services’ coronavirus response efforts.