This is why we’re concerned with proposed rules that threaten to make the research environment in the U.S. even more hostile to foreign students (from our sister blog, the CRA Bulletin):

Foreign Enrollments in CIS drop by a Third
The number of international students enrolled in Computer and Information Sciences (CIS) at all degree levels in the United States fell 32.5 percent between 2003/04 and 2004/05, according to the Institute of International Education’s Open Doors 2005 report. Foreign students enrolled in CIS numbered 57,739 in 2003/04 and 38,966 in 2004/05.
Among all fields, foreign enrollments declined 1.3 percent. Between 2002/03 and 2003/04, foreign enrollments declined 2.4 percent. Previous to this, foreign enrollments experienced decades of significant growth.
Each of the three most popular fields of study for international students– Business and Management, Engineering, and Mathematics and CIS– reported a decline in enrollments.

CRA’s Jay Vegso has got all the data.