President Obama has been ordered to appear before an Atlanta court that handles ballot disputes, as the birthers try once again to get his name off the ballot in Georgia.

The new birther suit claims Hawaiian-born President Obama can't be commander-in-chief because, they contend, his father was not a citizen, even though his mother was.

"That issue has yet to be litigated," says WSB legal analyst Ron Carlson.  "That's why the Georgia trial on Thursday will be closely watched."

Carlson says the birthers also will have to prove their contention that Barack Obama, Sr., was not a citizen as they make their case.  He says the case in the Office of State Administrative Hearings could have reverberations.

"If somehow the court would hold against the administration, against the president, it would have a domino effect," said Carlson.  "I would expect that in primaries across the country, you would see successive suits like this filed."

It would also suggest that Donald Trump's daughter Ivanka, or Gwyneth Paltrow's daughter Apple, wouldn't be American citizens since their second parents were born overseas.  Ivana Trump was born in Czechoslovakia.  Gwyneth Paltrow's husband, Coldplay lead singer Chris Martin is British.

Thursday's hearing is in front of an administrative judge; Deputy Chief Judge Michael Malihi on Friday denied a motion by the president’s lawyer to quash the subpoena requiring Mr. Obama to show up.  The court helps advise the Secretary of State which names go on the ballot in primaries.