The United States Congress is considering voting in funds next year to help Vietnam clean areas heavily contaminated by toxic defoliant Agent Orange, a US official said in Hanoi."We are going to provide assistance to help clean up sites where dioxin continues to pose serious health threats to people living there," said Tim Rieser, aide to Democrat senator Patrick Leahy.

"We also want to look for ways to extend assistance to people with disabilities," he told journalists in Hanoi.