The Trump administration is weighing a plan to charge international students US$100,000 to stay in the country and work after graduating, according to a person familiar with the matter, in a potentially devastating move for student visa holders already squeezed by recent immigration crackdowns. The person familiar spoke on condition of anonymity to discuss internal deliberations. A White House official said there was no imminent policy change, but did not deny the proposal was under consideration. If implemented, the fee would put a popular postgraduate visa extension out of reach for many students. The extension, called Optional Practical Training, is a core aspect of the international student pipeline in the US that allows student visa holders to extend their stays to gain relevant work experience.