Catherine Rampell: The biggest lesson from Michael Cohen’s explosive testimony is that we need to beef up the IRS

There were lots of takeaways from Michael Cohen's explosive congressional testimony this week: about Russia, racism, redemption.To me, the biggest lesson was that we desperately need to increase the Internal Revenue Service's budget.Cohen, formerly President Trump's personal lawyer, repeatedly offered accounts of not only how comfortable Trump became with cheating Uncle Sam but also how ill-equipped our tax cops were to catch him.We heard, for instance, Cohen's story about how the president used