Secure STM is currently available in:

AK
AL
AR
AZ
CA
CO
DC
DE
FL
GA
HI
IA
ID
IL
IN
KS
KY
LA
MD
ME
MI
MN
MO
MS
MT
NC
ND
NE
NH
NM
NV
OH
OK
OR
PA
RI
SC
SD
TN
TX
UT
VA
WI
WV
WY