https://www.youtube.com/watch?v=d0Cm_wFnQ60

http://www.aapt.org/aboutaapt/2013-US_Physics-Team_pr20130510.cfm

http://www.acs.org/content/acs/en/education/students/highschool/olympiad/2014-chemistry-olympiad-finalists.html

http://stats.ioinformatics.org/results/2014

http://www.imo-official.org/team_r.aspx?code=USA&year=2014

http://top25.sciencedirect.com/archive/50

lots of chinese in science competitions and authoring top science paper in U.S. institutions nowadays, hard to deny against hard facts.