The 2022 investment ban is the biggest hurdle hampering economic ties, according to the American Chamber of Commerce The biggest obstacle for American businesses in Russia is the investment ban imposed by former US President Joe Biden, the head of a major business lobby in Moscow has said. Robert Agee, the president of the American Chamber of Commerce in Russia, told RBK on Monday that lifting the ban is a key condition for the return of US companies. Introduced under a 2022 executive order