“The burden of proof is always on the accuser.”
Not in all situations. That occurs only in a trial.
The burden of proof was on me when:
I had to show my birth certificate when I got my driver’s license to prove I was eligible.
I had to show my birth certificate when I applied for college to prove who I was; I’ve had to show my birth certificate on a few job interviews to show that I was eligible for the job; other examples. You get my drift.
Evidently, it is crude and narrow-minded and extremist to actually require a presidential candidate to prove he is eligible according to Constitutional requirements.
All normal legal burdens are inverted for the high and mighty.
You didn’t refer to any such situation. You referred to the courts.