In 2005 he became a Parliament member and the head of one of the six committees, his committee was in charge of writing chapter four: Powers of the Federal Authorities in the permanent constitution Constitution of Iraq#Chapter Four: Powers of the Federal Authorities and one of three technocrats to draft Iraq's much debated oil and gas law, which is still waiting to be approved by the parliament. In late April 2006, there was strong speculation that he would again be appointed Minister of Oil, this time by the government of Nuri al-Maliki.
In 2005, he joined Parliament as a member and became head of one of six committees. His committee was tasked with writing Chapter Four: Powers of Federal Authorities in Iraq's constitution, alongside being one of three technocrats drafting the country's oil and gas law, which is still pending approval by parliament. In late April 2006, there were speculations that he might be appointed Minister of Oil once more under Nuri al-Maliki's administration.