The two cases have fueled concern among court observers they are being stymied by government interference, a charge that officials deny.
At least two women threatened suicide over the loss of their homes.
Drugs such as crystal meth and ecstasy are now among the top three drugs of use in the 15 east and southeast Asian countries.
Cambodia’s press freedoms were ranked 128th out of 178 countries in 2010, a slide from 117th the year before.
The rights group says the Cambodian government is ignoring its international obligations by pushing ahead with forced evictions.
Subedi spoke to VOA Khmer after he was a guest speaker for a conference on the Paris Peace Accords in Berkeley, California.
Cambodia has edged closer to a unilateral system of government, with the ruling party controlling much of the leadership.
Moek Dara and a subordinate, Chea Leng, are facing 38 counts of trafficking and bribery, following their arrest in January.
Cambodian women have returned with stories of physical or sexual abuse at the hands of their employers.
Cambodia has banned the recruitment and export of laborers to Malaysia for domestic work, pending an investigation into abusive practice
Charges included incitement, for land protests, and the destruction of property related to protests, demonstrations and disputes.
Long Panhavuth, a monitor for the Cambodia Justice Initiative, suggested the UN side see itself as a “partner,” not as an “adviser.”