If your wife is in valid H-4 status, she should be eligible to file a change of status to J-1 with USCIS. These type of applications usually take at least 3 months to be adjudicated by USCIS. If timing is an issue, you may consider having her apply for her visa at a U.S. consular post. Also, before applying for the J-1, you should check whether she will become subject to the 2 year home residency requirement.
I recommend consulting with an immigration attorney regarding these and other processing issues regarding the J-1.
Avi Friedman| Attorney at Law | Wolfsdorf Immigration Law Group | 1416 2nd Street | Santa Monica, CA 90401 | (T) 310-570-4088 x249 | (F) 310-570-4080 | firstname.lastname@example.org | www.wolfsdorf.com | Offices in Santa Monica, CA and New York City
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