He said he would submit evidence, a video clip featuring Constitution Court chairman Wasan Soypisudh talking about the Samak case on April 5, 2011 and at a seminar on March 15.
Ruangkrai said he suspected the court did not follow the law in delivering the ruling on the Samak case. Ruangkrai would also request the NCCC to decide if the ruling is invalid.
In his defence, Wasan said he had earlier mentioned the flaw in the ruling of the Samak case, which had to do with the format of the ruling and not the content. He added that the ruling was confusing, hard to understand and did not prioritise key topics but there was no flaw or deficiency in the content.
Meanwhile, Democrat deputy spokesman Rames Rattanachaweng accused Ruangkrai of trying to discredit the Constitution Court judges by moving to file a complaint against the court with the National Counter Corruption Commission over its ruling.
Rames said Ruangkrai should check the personal verdicts of nine Constitution Court judges before filing the complaint.