Prosecutors plan to introduce evidence at his tax-evasion trial that they said will show Hunter Biden took compensation from a Romanian businessman who sought to have federal agencies in the U.S. quash a criminal investigation against him in his country. Special counsel David Weiss’ office wrote in a filing Wednesday obtained by NBC News that Biden entered into a verbal agreement with a business associate “purportedly to help a Romanian businessperson, G.P., contest bribery charges he was facing in Romania.” Prosecutors expect the associate will testify that the two lobbied and consulted toget…