Because smearing witnesses is consistent with thug Trump values. He lacks in American good in most every sense of the word http://www.westword.com/news/donald-trump-at-one-year-is-worst-president-ever-professor-says-9878221 Anything bad is possible from the worst president ever. Anyway smearing witnesses sorta runs in the family now. Major Donor Admits Hiring Prostitute to Smear Witness By LAURA MANSNERUSAUG. 19, 2004 http://www.nytimes.com/2004/08/19/nyregion/major-donor-admits-hiring-prostitute-to-smear-witness.html Ivanka picked a man who is much like her father, and who is likely like his father. Could have just said, 'because we know Trump is a thug.'