Nope. Trump- unlike his predecessor- took little to no donations from Wall Street (also compare that to Clinton). Corporations seen as citizens have little to nothing to with the Federal government allowing Freddie and Fannie to exist, and it certainly has nothing to with the Great Recession- which was caused by the Fed backing and subsidizing Wall Street.  Without the Fed, Wall Street would never have made such reckless endeavors, instead knowing they were on their own, should their shares go under.