Fake official letters?

A letter allegedly written by President Ellen Johnson Sirleaf to the 'Majority Members' (also known as Anti-Tyler lawmakers) of the House of Representatives read in the Thursday, August 18 session, is said to be fake because it lacks the conventional reference code/index (Document Code) and is riddled with spelling mistakes and ink-pen corrections, as well as an unusual signature of the President. It had the right letterhead, but some standard official letter codings were missing, and '"That’s outrageous and un-presidential," the staffer said. "I have seen letters with spelling mistakes and run-on sentences but they are not corrected with ink-pen."'