Strike is part of a broader escalation in the Kurdistan Region of Iraq, which has increasingly been drawn into regional tensions linked to the US-led Iran War
The proposal is not new. Political forces, particularly Sunni groups, have previously attempted to pass the law in earlier years to achieve sectarian balance.
Iraq says the US warned of possible sanctions if former prime minister Nouri al-Maliki is re-nominated, deepening tensions over the country’s next government.