The Green Party maintains there's no evidence the Government's proposed new security laws are needed.

Legislation is due before parliament this week that'll give extra surveillance powers to the SIS and allow the Government to cancel passports for up to three years.

MP Kennedy Graham says the Prime Minister hasn't yet made a case for rushing through laws that infringe significantly on peoples' rights.

Dr Graham says the proposed law has several flaws, and pushing it through without proper scrutiny will result in poor decision making.