Rishi Sunak has said helium is "up for the fight" to bring successful caller authorities to forestall migrants crossing the Channel connected tiny boats to scope the UK.
The premier curate said helium was assured the authorities would triumph immoderate ineligible battles implicit the "tough, but indispensable and fair" measures.
Earlier his location secretary, Suella Braverman, announced the measure amid a divisive statement successful Parliament.
Labour said the Tories' latest plans were similar "groundhog day" and a "con".
Standing down a lectern emblazoned with the slogan "stop the boats", Mr Sunak confirmed the planned caller law, which volition spot amerciable migrants deported wrong "weeks", would use retrospectively to everyone arriving successful the UK illegally from Tuesday.
He said helium knew determination would beryllium a statement astir the toughness of measures but the authorities had tried "every different way" of preventing the crossings and they had not worked.
While helium admitted it was a "complicated problem" with nary azygous "silver bullet" to hole it, helium said helium would not beryllium lasting determination if helium did not deliberation helium could deliver.
Shadow location caput Yvette Cooper said superior enactment was needed to halt tiny vessel crossings, but said the government's plans risked "making the chaos worse".
Opposition MPs and charities person criticised the proposals, with immoderate saying they are not lawful.
In a missive to MPs, Ms Braverman said determination was "more than a 50% chance" that the authorities was incompatible with the European Convention connected Human Rights (ECHR).
But Mr Sunak said helium believed it would not beryllium indispensable for the UK to permission the ECHR and said the authorities believed it was acting successful compliance with it and "meeting our planetary obligations".