The United States is aiming to shorten the duration of visas for foreign students and journalists, a government proposal showed Wednesday, as President Donald Trump further ramps up immigration enforcement across the country.The Department of Homeland Security said it is seeking to tighten rules on F visas for international students, J visas for visitors allowed to participate in exchange programs and I visas for members of the media.Under the plan, holders of the student and exchange visas would be restricted to a stay of up to four years, while journalist visas would not exceed 240 days, …READ FULL ARTICLE