A vote in New Zealand’s parliament was suspended and two lawmakers ejected Thursday amid debate over a controversial proposed law redefining the country’s founding agreement between Indigenous Māori and the British Crown.

The Treaty of Waitangi, which is the focus of the proposed bill, dates back to 1840 and is considered New Zealand's founding document. The agreement was signed by Māori chiefs and the British monarchy and focused on rectifying wrongs done to the indigenous people when the country was colonized.