The "expansion in the money supply" has been going on for 15 years. The supply issues started 2.5 years ago. The inflation started about 2 years ago. So only one of those factors is correlated with serious inflation.
The explicit goal of expanding the money supply in 2009 was to drive inflation in order to combat deflation. It didn't work. We ended up with a decade+ long period of low/no inflation.
Even today, the USD is growing stronger relative to other currencies. So in spite of this continued money supply expansion, Americans are experiencing inflation the least of anyone in the developed world.