Washington : US President Donald Trump has amplified a provocative critique of birthright citizenship by sharing a video of prominent conservative author and radio host Michael Savage, who claimed the current legal system allows immigrants to exploit American laws by arriving in the "ninth month of their pregnancy".In the footage, Savage argued that such practices create a loophole where "a baby here becomes an instant citizen, and then they bring the entire family in from China or India or some other hellhole on the planet."The footage, originally aired on the Newsmax series The Savage Nation, was highlighted by the "Commentary…