Unless you're Hanson, migration can be a dangerous sinkhole

Key points

• Opposition leader Angus Taylor has finally released the Coalition's migration policy, after One Nation and the government had already set out their positions. The plan would cut net overseas migration from just under 300,000 to 100,000 in each of the first two years, rising to 160,000 by the fourth year.
• One Nation leader Pauline Hanson's offering goes further, with negative net migration initially.
• Business groups say the cuts could deny them needed workers, and the policy's effect on international students and the economy remains unclear.