WATCH: Klobuchar asks Barr if Mueller investigated Trump's taxes

Attorney General William Barr said he does not know whether special counsel Robert Mueller looked into President Donald Trump's taxes. Barr said he could try to answer the question -- from Sen. Amy Klobuchar, D-Minn. -- later on if submitted it in writing. Barr also told senators there was a problem with special counsel Robert Mueller’s approach to determining whether Trump obstructed justice. Barr said while some inferences can be drawn from circumstantial evidence, Trump’s individual actions were not illegal, making it difficult to determine whether he acted corruptly as a whole. “It is trying to determine the subjective intent of a facially lawful act, and it permits a lot of selectivity on the part of the part of the prosecutors,” Barr said in response to questions from Klobuchar. Klobuchar, a 2020 presidential candidate, suggested Barr should have looked at the totality of the evidence rather than whether each specific act the president took could have constituted obstruction of justice.

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