President Trump signing an executive order on tax rules on Friday.

FOX's Jon Decker reports from the White House:

During a signing of that executive order on tax rules at the Treasury Department, President Trump said he would have a major tax reform announcement next week:

(President Trump) "We'll be having a big announcement on Wednesday having to do with tax reform. The process has begun long ago, but the reform will begin on Wednesday."

The new executive order calls for a review of significant changes to the tax code in the past year and half to determine whether they impose what the White House calls an "undue financial burden on American taxpayers."

At the White House, Jon Decker, FOX News.