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We have updated our analysis of the 9-year WMAP data using the collection ofpolarization maps looking for the presence of additional evidence for a finite'cosmic ray foreground' for the CMB. We have given special attention to highGalactic latitudes, where the recent BICEP2 findings were reported. The methodof examining the correlation with the observed gamma ray flux proposed in ourearlier papers and applied to the polarization data shows that the foregroundrelated to cosmic rays is still observed even at high Galactic altitudes andconclusions about gravitational waves are not yet secure. Theory has it thatthere is important information about inflationary gravitational waves in thefine structure of the CMB polarization properties (polarization vector andangle) and it is necessary to examine further the conclusions that can begained from studies of the CMB maps, in view of the disturbing foregroundeffects.

Cosmic Ray contribution to the WMAP polarization data on the Cosmic Microwave Background