The US plans to start “aggressively” revoking visas for Chinese students, Secretary of State Marco Rubio said. It’s the most recent escalation in the Trump administration's crackdown on foreigners attending American universities. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on notifications so you don't miss any videos from Bloomberg Markets & Finance: https://tinyurl.com/ysu5b8a9 Visit http://www.bloomberg.com for business news & analysis, up-to-the-