‘Birtherism’
Lol.
I believe Obama is a liar. Is that ‘birtherism’?
I believe Obama is a pathological liar. Is that birtherism?
You don’t believe Obama is a pathological liar.
Is that your definition of conservatism?
Lol.
"Birtherism," as I understand and define it, is that point of view holding that a person is ineligible for the office of president on account of the circumstances of that person's BIRTH, either 1) the person was not born in the U.S. and does not otherwise meet the qualifications for being a citizen at birth and/or 2) the person irrespective of birthplace was born to one or more parents who were not then U.S. Citizens. It's a term originally coined in connection with Obama, but one also now sees "Rubio birther" or "Cruz bither," so it has become term of more generalized use.
As to Obama, things like his Social Security number and SS registration -- while not pertaining to birth or eligibility -- are often so linked together with the birth issues that I'd call those part of Birtherism. However, a politician being accused of habitual lying is as old as politics itself, and hardly something unique to Birtherism.
That's my definition, and I think it's a workable one.