The headline from Capitol Hill on Janet Yellen: She's the "most popular" of President Barack Obama's nominees. That's how conservative former Fed economist Kevin Hassett summed up his talks with Republican lawmakers ahead of Yellen's confirmation hearing.
"She had great meetings; people have serious policy concerns, but I think this is going to be kind of an easy confirmation," the American Enterprise Institute scholar told CNBC's "Squawk Box" on Thursday.
But Hassett said Yellen's GOP critics want the dovish Fed vice chair to express "some kind of regret" or a sign that extraordinary monetary measures—such as the current quantitative easing program to buy $85 billion worth of bonds every month—won't go on forever.
(Read more: Could Fed's Yellen sound like a hawk?)
Later Thursday, the Senate Banking Committee is scheduled to begin the confirmation process of Yellen to succeed Ben Bernanke as chair of the Fed. Even her detractors admit she's likely to be confirmed—thus becoming the first woman ever to serve as head of the central bank.