The editor made a mistake.  It was in 1991 and Obama was only 30, not an important author and mistakes happen. It wasn't Obama who wrote that.   It was corrected and should have been end of story yet Breitbart and Snopes and The Donald chose to run with a story they KNEW to be false.    There is NO EXCUSE for Trump haranguing Obama during his Presidency, the first black President,  to "show his papers".  No excuse for Trump's bad behavior.  He is the one who appears to be completely corrupt - just like in this article.  He doesn't act like an innocent man.  Now the Donald should show his tax returns and be transparent with his business dealings in Russia and the Middle East and allow this investigation continue, unfettered..