WASHINGTON — President Donald Trump’s former campaign chairman, Paul Manafort, and Manafort’s business associate Rick Gates face decades in federal prison and millions of dollars in potential fines if convicted on all counts in a sprawling federal indictment unsealed Monday.Manafort potentially faces up to 80 years in prison, according to a review of the federal charges and the relevant statutes by The Associated Press. Gates, who also worked for the Trump campaign, faces up to 70 years.Prosecutors could still file additional charges against the pair. If convicted at trial, the law gives federal judges wide latitude in imposing prison sentences and fines.Prosecutors allege that Manafort and Gates worked as unregistered agents of the government of Ukraine and the Party of Regions, a pro-Russian political party led by Victor Yanukovych. While serving as president of the former Soviet republic from 2010 to 2014, Yanukovych was closely aligned with Russian President Vladimir Putin.The indictment says that up to $75 million flowed through overseas accounts controlled by the two Americans. Manafort is alleged to have laundered more than $18 million he used to buy property and goods in the United States. Gates is alleged to have transferred more than $3 million to accounts he controlled.