The Iraqi Parliament called an extraordinary session for Sunday to decide the future of US troops in Iraq.

The meeting was scheduled to start at 1 p.m. local time (5 a.m. ET), but has been delayed. Several members of parliament told CNN only 20 or so lawmakers have turned up, out of a total of 329. It's uncertain whether the session will go ahead at all -- the Iraqi Parliament often fails to meet when contentious issues are on the agenda.

Draft proposals that have been submitted by a number of political parties vary from a plan to force US troops out immediately, to keeping them in the country under revised conditions.

American soldiers take position around the US Embassy in the Iraqi capital Baghdad. Photo: US EMBASSY IN IRAQ/AFP via Getty Images

Hamdallah al-Rikabi, member of Saeroun, Muqtada Sadr’s political party, said “we are hoping to see a national decision by all political parties that US troops leave the country immediately.”

Al-Rikabi added his party has been asking for US troops to leave for some time, because the longer US troops stay in the country, problems will increase. He said US troop withdrawal is necessary in order to preserve Iraqi sovereignty.

Other pro-Iranian and hardline Shia parties also want all US military presence in country to end immediately.

But more moderate Shia political parties, like Dawa, want to revisit the US Iraqi agreement. They want to keep US troops in the country, but take away the immunity the US troops now enjoy.

According to Sunni lawmaker Wahda Jumaili and Kurdish lawmaker Sarkawt Shamsulin, Sunni and Kurdish parties want the US troops to remain. They want to see a legal agreement between US and Shia militias to not target each other, and for both to only target "extremist groups."