After a high court decision in November that led to the release of more than 100 people in immigration detention, the Labor government has passed legislation designed to toughen Australia\u2019s immigration law. Termed \u2018preventative detention\u2019, these new powers allow the government to send some high-risk non-citizens to prison \u2013 even though they haven\u2019t committed a new offence. Chief political correspondent Paul Karp tells Laura Murphy-Oates about the moral and legal minefield surrounding these new powers You can support the Guardian at theguardian.com/fullstorysupport