AP
Liesman reported that Paul has informed Senate leadership of his plans. Paul's office didn't immediately responded to a request for comment.
A "hold" is an informal Senate procedure to signal a senator's intentions that he or she does not want a bill or nomination to reach the floor. In February, Paul put a hold on the nomination of John Brennan to be CIA Director while he awaited answers to questions about the U.S.'s drone program. A few weeks later, Paul began his historic talking filibuster of Brennan's nomination.
Paul's intention to hold Yellen's nomination depends on whether fellow Senate Republicans go along with him. If Senate Majority Leader Harry Reid has 60 votes, Yellen's nomination will get through to a final confirmation vote.
"I don't know enough yet to know whether his request for a vote will be taken seriously, but I kind of doubt it," a Senate Democratic aide told Business Insider.