The importation of CITES 1 animals is possible. I imported 21 CITES appendix 1 Puerto Rican boas (Epicrates Inornatus) 2 years ago. Most pythons and boas are appendix 2, however, there are a couple appendix 1 boids as well. They are as follows:
*Indian (Ceylons fall under the Indian classification since the government can't tell the difference between an appendix 1 Indian and an appendix 2 Ceylon).
*All 3 Madagaskar Boas (Dumerils, Ground and Tree)
*Virgin Islands (Very rare)