we will go to john mcardle next. hn: on fact checking, we pointed viewers earlier to factcheck.org, one of those websites that did plenty of fact checking last night. we talked before about the president's exaggerations on gdp and employment. here is another one of their fact checks come of this one having to do with the president's comments about a border wall. president trump boasted, "as we speak, a long, powerful wall is being built along the southern border. we have now completed over 100 miles." the administration has improved barriers along the border, but nearly all construction has been to replace existing barriers. .org, at the top of the page, they note that as of fiscal year 2015, there were 654 miles of primary barriers on the southern border, including 300 54 miles of primary pedestrian barriers, 300 miles of primary vehicle barriers. u.s. customs and border protection has 655 miles of --mary borders on the border primary barriers on the border. approximately one mile of new border wall has been built, a