Senate Republican says his ‘preference’ is for IRS to investigate who leaked Trump’s tax returns instead of lawsuit

Republican Sen. Ron Johnson (Wis.) said Sunday that he would prefer the Internal Revenue Service (IRS) undertake a “robust” investigation into the leak of President Trump’s tax returns, days after the president sued the agency for $10 billion over the disclosure.  “I don’t doubt the federal government deserves to be sued. The problem is, we…