The Nazis were illegitimate too, (outside of Germany) but you d@mned well better do what they told you or there would be bad consequences.
That there are bad consequences does not address the issue of legitimacy. Or competence, such as with the courts.
Speaking of Birthers doing stupid acts, The Birther Bibles contains a Book of Acts!
The Book of Acts
Chapter 1
1. These be the acts which it is better for thee not to commit.
2. Thou shalt not maketh a Citizen’s Arrest. These turneth out badly.
3. If thou attempts to maketh a Citizen’s Arrest anyway, and are afterwards arrested and convicted, do not talketh back and disrespect the Judge.
4. Thou shalt not engageth in civil rebellions or sedition.
5. If thou engageth in civil rebellions or sedition anyway, then thou shouldst not broadcast thy plans to bankers, the FBI, and strangers on the Internet. These also turneth out badly.
6. Neither shalt thou carryeth within thy vehicle, personal pleasure devices or deviant materials, as these will cause much shame unto thee.
7. Thou shalt not refuseth to deploy if so ordered by thy Centurion.
8. Thou shalt not walketh away from thy military retirement.
9. Thou shalt not maketh the youtube videos in which thou promises to arresteth the President. For lo, his protectors shall descend upon thee with guns, subpoenas, and search warrants.
10. Thou shalt not calleth judges by names or falsely accuse them within their own Courtroom, for their sanctions may be laid heavily upon thee.
https://birtherthinktank.wordpress.com/the-birther-bible/
(I do not know about all of this stuff, but my BFF said one Birther got arrested, and he had a pink vibrator in his car. She said that all the acts above were actually committed by Birthers back in the day.)