By ALANNA DURKIN RICHER, Associated Press WASHINGTON (AP) — A former FBI informant is set to plead guilty on Monday to lying about a phony bribery scheme involving President Joe Biden and his son Hunter that became central to the Republican impeachment inquiry in Congress. Alexander Smirnov is expected to make the plea in Los Angeles to a felony charge in connection with the bogus story, along with a tax evasion charge stemming from a separate indictment accusing him of concealing millions of dollars of income, according to court papers. Smirnov has been behind bars since his arrest in February on charges that he told his FBI handler that executives from the Ukrainian energy company Burisma had paid President Biden and Hunter Biden $5 million each around 2015. Prosecutors and the defense have agreed to recommend a sentence of between four and six years in prison, according to the plea agreement. Smirnov had been an informant for more than a decade when he made the explosive allegations about the Bidens in June 2020, after “expressing bias” about Joe Biden as a presidential candidate, prosecutors said. But Smirnov had only routine business dealings with Burisma starting in 2017, according to court documents.