Subedi said in his report that upcoming elections face a number of irregularities and need reformed.
The envoy, Surya Subedi, said in a statement this week the National Election Committee must be reformed .
The Khmer Rouge tribunal’s funding will dry up in October without an infusion from donors, tribunal experts say.
Surya Subedi gave 17 recommendations for election reform in order for next year’s polls to meet international standards.
Issues that affect Cambodians in America are similar to those the rest of the people in the country.
Mam Sonando has been in jail since his arrest in mid-July, awaiting trial on charges he led a secessionist movement in Kratie province.
Some 600,000 people still need to register, according to election officials.
Rights groups say the summons is a continuation of a campaign of intimidation against civil society in the wake of the Kratie crackdown.
He is accused of aiding Bun Rotha, a village activist who helped organize a land protest in Kratie province in May.
Both Kem Sokha and Sam Rainsy have said they remain committed to forming the new party.
Cambodia ranks 164th of 182 countries on Transparency International's corruption index.
Support for the royalist parties has waned in recent elections, with both the Norodom Ranariddh Party and the Funcinpec party.
The letter, which began circulation on Sunday, states that Sam Rainsy does not want to lead a new party with Human Rights Party President Kem Sokha.
The two men are in Washington meeting US officials to lobby for support and explain the strategy of the new party.
Prime Minister Hun Sen has compared news of the merger to “a storm in a bottle.”
At stake in cases 003 and 004 are the potential indictments of five more Khmer Rouge cadre.
Among them is Beehive Radio owner Mam Sonando, who remains in prison awaiting trial.
Mark Harmon, a US judge, was announced as the UN’s choice of investigating judge on Monday.
Khmer minorities in Vietnam say they are subject to unfair policies and crackdowns, especially over their form of Buddhism.
Rights workers say Mam Sonando’s detention has spread a message of fear and is hurting Cambodia’s fledgling democracy.
ព័ត៌មានផ្សេងទៀត