cant help u mate - the nearest i got to an m1 was a call to the embassy - i believe that strictly speaking if you are going to the states on a vwp - you havent even got a visa in the first place -certainly not a visa to change anything into - in this case an m1...
perhaps if you had a b1 visa (which i think is still a tourist visa of sorts ) you could change it to something whilst you are out there - but since vwp is nt actually a visa (hence the "waiver" bit) youve got nothing to change it to...
to be honest it does all seem a waste of time ... tsa checks is one thing ,,, checking if youre dodgy or not ... well n good - but why the hassle and expensive of replicating this check again for a pox*y m1?- especially if your from ,,, dare i say ,,, a so called ally ??
i