SAN DIEGO (CNS) - Lawyer Gary Kreep of Ramona is to appear before a three-judge federal Appeals Court panel in Pasadena Monday to argue that Barack Obama cannot be the president of the United States -- no matter what paperwork the president released last week.

Kreep has said he and co-counsel Orly Taitz are unfazed by President Obama's release if his long-form Hawaiian birth certificate last week. The president also gently poked the birther movement at Saturday's White House Correspondent's Dinner.

Kreep and Taitz have lost several legal efforts to disqualify the president from holding that office, and have faced sanctions for abusing the federal court system.

Although the original lawsuit sought release of the birth certificate, Kreep told a San Diego television station Friday that the release does not change their position.

Kreep told KGTV that he and Taitz, a dentist and attorney from Rancho Santa Margarita, now want their own their forensic experts to examine the president's paperwork.

"We're not sure that's an actual copy of the birth certificate," Kreep said in an interview with the San Diego ABC affiliate.

Saturday night in Washington, the president said Donald Trump and other birthers were happy that the long form birth certificate had been released, because it allowed them to investigate other questions like "Did we fake the moon landing? What really happened in Roswell? And where are (missing rappers) Biggie and Tupac?"

Taitz has already been sanctioned by a federal judge in Georgia for misusing the court system to press the issue, but has three separate court actions pending to challenge President's Obama's qualifications to serve the nation. She told City News Service last week that she questions the birth certificate's authenticity because it lists the president's father's race as African, instead of negro.

Kreep and Taitz will also challenge the president's citizenship because they believe he was adopted by a foster father while living in Indonesia as a child, according to the United States Justice Foundation. Kreep is the foundation's executive director.