Janet Yellen: ‘Unacceptable’ inflation is a global problem

US Treasury Secretary Janet Yellen conceded on Tuesday that inflation is at “unacceptable levels,” but she also sought to underscore that this is not a problem exclusive to the United States.US Treasury Secretary Janet Yellen conceded on Tuesday that inflation is at “unacceptable levels,” but she also sought to underscore that this is not a problem exclusive to the United States.