“If there are to be witnesses in the impeachment trial of President Trump — at this moment an unknown — John Bolton and Hunter Biden would almost certainly be among those called to testify. Some people on Capitol Hill describe it as a one-for-one trade.
This idea has been widely dismissed by both sides. Democrats say Hunter Biden, son of former Vice President Joe Biden, is irrelevant to the issues in the articles of impeachment. The president and Republicans assert that Mr. Bolton, the former national security adviser who was fired by Mr. Trump — Mr. Bolton says he quit — is simply promoting a forthcoming book and has nothing meaningful to say.
To my own surprise, I now think that such an arrangement might well be highly valuable — for the country.
For some time, I was against the Democrats’ offering any Biden as a witness in Mr. Trump’s trial, on principle. Just because the Republicans want to batter Hunter Biden is no reason to submit either him or his father as fodder to hostile Republicans. But principle can be turned on its head; calling Hunter Biden could backfire on the Republicans big time.”