June 4 (UPI) -- The Trump administration's new policy to revoke the visas of Chinese students has advocates for the Asian American community fearful of the potential for broad discrimination.

Secretary of State Marco Rubio announced the policy to "aggressively revoke" visas in a two-sentence statement last week. With that, roughly 25% of international students are forced to reassess their academic plans and consider continuing their education and pursuing their careers outside of the United States.

Nearly 300,000 international students studying in the United States on visas come from China each school year, the second most of any country, according to the Institute of International Education. A majority of them are studying in STEM fields.

Rubio's announcement has Rekha Sharma-Crawford, an immigration attorney at Sharma-Crawford Attorneys at Law, wondering why Chinese students are being targeted.

Sharma-Crawford told UPI that the lack of information provided by Rubio leaves advocates like her with only speculation.