Late last year, 4000 Hmong were forced by Thailand to return to Laos. You can read more about what happened then at The Best Resources To Learn About The Forced Return Of 4,000 Hmong Refugees By Thailand.
Earlier this week, U.S. Senator Al Franken was provided limited access to the returnees in a visit to Laos. You can read about his visit, and with his displeasure at how it was handled by the Laotian government, in this article in the Minnesota Star Tribune.