Washington (AFP) – President Joe Biden will tout his economic vision in the US industrial heartland Wednesday, as spiraling inflation and a stalled domestic agenda undermine his pledge of commitment to blue-collar America. The Democratic leader’s trip to Cleveland, Ohio, comes amid steady job growth and unemployment at just 3.6 percent — but sky-high living costs threaten his party’s prospects in November’s midterm elections. Meanwhile, a program of interest rate hikes from the Federal Reserve has sparked ominous warnings from economists and investors that the world’s largest economy is heade…