Removing non-citizens would dramatically alter the representation some states receive in the House of Representatives, which is based on population.

The Trump administration and his legal team argue that his plan is both constitutional and within his legal powers as president.

“As history, precedent, and structure indicate, the President need not treat all illegal aliens as ‘inhabitants’ of the States and thereby allow their defiance of federal law to distort the allocation of the people’s Representatives,” acting Solicitor General Jeffrey Wall wrote.

A ruling in Trump’s favor would likely disproportionately impact big Democratic states like New York, Texas and California — which are home to large populations of immigrants. California alone could potentially lose two or thre….