Who’s who in Trump-Russia saga 
Zachary Cohen
Congress passed legislation in 2011 to extend Mueller’s term from the usual 10 years, giving him a tenure.
['Congress', 'passed', 'legislation', 'in', '2011', 'to', 'extend', 'Mueller’s', 'term', 'from', 'the', 'usual', '10', 'years,', 'giving', 'him', 'a', 'tenure.']