I am wondering about that myself. Texas accepts both DO and MD rotations. In addition, Ross is the ONLY Carib. school that is OFFICIALLY approved in Texas (Even SGU is not on their list). Please look at the following link:
http://www.tmb.state.tx.us/professionals/physicians/applicants/STDNHPSE.rtf
Texas might give you problems if:
-You did a rotation that is not MD or DO approved.
-You took unautherized breaks between rotations.
-You did a rotation in the state of Texas while in a foreign medical school (unless, you officially enroll as a guest student at a Texas Medical school).
Now other states, like California, Pennsylvania......will not license you if you did rotations at a DO hospital.
Good Luck.