According to the one-hundred and twenty-third principle of the constitution, the president is obliged to sign the legislation after passing legislative process (confirmed by Guardian Council or Expediency Council) and notify the authorities to enforce.
Saying as Public Relations Office of Majlis Research Center, according to the constitution to become the text into a law, passed by Parliament and approved the Guardian Council or Expediency Council is only enough and legislators do not involve the other in this process, the Office of Legal Studies said.
Accordingly, signing the rules by the president is procedural and the president has no right to oppose the legislation and refuse to sign it and this refusal is considered as a violation of his legal obligations. (The full text of the report is attached.)
, Parliamentary Approvals