[Lurking Libertarian]

The question is did Kagan represent the government or Obama in one or the many other Supreme Court cases about Obama's eligibility when she was the United States Solicitor General?

No-- the Soliciitor General did not file anything with the Supreme Court in this or any prior Obama eligibility case.

[Red Steel]

No-- the Soliciitor General did not file anything with the Supreme Court in this or any prior Obama eligibility case.

Lets be clear here. The Solicitor General does represent the Government of the United States by determining its legal stance and conducts the cases in front of the Supreme Court.