Nearly three quarters of all the rapes involved girls under the age of 18.
They were charged with illegally crossing the border and entering a military area.
More than 1,000 of 4,000 families have already been evicted or have moved from Boeung Kak lake area.
Members of the Thailand Patriot Network gathered in front of the Cambodian Embassy to call for the release of the group.
Richardson's visit follows a high-profile trip by US Secretary of State Hillary Clinton in November.
Meanwhile, the National Election Committee has been accused of weak enforcement of the Election law.
The reporters killed include those who supported the opposition parties, as well as the pro-government newspaper Koh Santepheap.
The charges carry a sentence of three to six months in jail and a fine of up to $500.
An independent analyst says Cambodia could see growth as high as 10 percent in coming years if governance is improved.
The $495 million dam, which China Huandian Corporation will control, is expect to produce 338 megawatts by 2015.
The film, which is shortlisted for the Oscars and recently screened in many theaters in Washington.
Every year, thousands of Cambodians migrate to work abroad in places like Thailand or Malaysia.
In a statement to the Assembly, Prime Minister Hun Sen said Cambodia had a 30-fold difference in trade imbalance.
Opposition members did not support this loan initiative because it was not clearly allocated.
The new penal code law, passed last year, has been made effective throughout the country since Nov. 12.
Cambodia goes to the polls every five years, first in national elections and then in parliamentary elections.
The law will require NGOs to provide financial reports and action plans to the government.
The health service provided by more than 50 doctors will include dental care and out-patient treatment.
Surin was once part of a wider Khmer empire that encompassed parts of modern-day Thailand and Vietnam.
The Khmer Rouge tribunal sentenced Duch to a commuted 19 years in prison, earlier this year.
ព័ត៌មានផ្សេងទៀត
