http://www.immigration-law.com/Canada.html
国土安全部昨天正式向白宫提交了申请，
要求白宫批准延长OPT至二十九个月，一经批准，立即生效！
现在已处于OPT之中的学生，其OPT极可能被延长；但具体细节，仍待澄清。(it seems totally 17 months instead of 29 months)
04/01/2008: DHS Submitted OMB 03/31/2008 Rule Extending Period for OPT for
17 Months for Qualified F-1 Students
The Homeland Security Department asked the White House OMB on March 31, 2008
to clear the interim final rule to publish in the federal register to
extend OPT for 17 months. This is an interim final rule and as s
