This morning CNN featured this article: White House sets out looming climate risks for U.S., calls for ‘urgent action’. The article links to this National Climate Assessment website. I am still working through the details but there does not seem to be one report; there are various component parts. Somewhere I read the full report is 1,100 pages, so clearly something had to be done to make it readable. The 12 page Summary is here; you have to download the pdf file and then open it.
Here is another info source; I got this one from the NY Times.