"We are looking at birthright citizenship very seriously, it's frankly ridiculous," Trump said when asked if he was considering issuing an executive order to end birthright citizenship.
Earlier on Wednesday, the Trump administration issued a final rule that allows for replacing the 1997 Flores Settlement Agreement (FSA) - a court settlement agreement that regulates detention of migrant children and imposes a 20-day detention limit.
The administration has implemented various policies such as the Remain in Mexico plan, which appears to have resulted in a 40 per cent decline in the number of illegal immigrant apprehensions at the US-Mexico border since May.
Last year US President Donald Trump confirmed that the so-called birthright citizenship would be ended 'one way or the other', adding that it is not covered by US Constitution.