Bloomberg took a close look at what impact may occur if President-elect Trump follows through on some of his campaign statements in "Where Charitable Giving May Head With Trump."
Trump has stated that he will increase GDP growth by 4% per year, which would likely lead to more charitable giving. However, many economists doubt he will be able to fulfill that promise due to economic and demographic circumstances beyond his control.
The President-elect campaigned on cutting taxes, especially on the wealthy. This would also likely increase giving to charity. However, his nominee for Treasury Secretary has cast some doubt on those tax cuts, by recently stating that any cuts on the wealthy will be offset by reducing deductions.
Trump has also expressed a desire to eliminate the Federal Estate Tax, which could actually reduce some charitable giving (at least when the impetus for the giving is to reduce the value of an Estate).
Only time will be able to clear up some of this uncertainty with respect to Trump's policies.
Reference: Bloomberg (Nov. 27, 2016) "Where Charitable Giving May Head With Trump."