and we are joined by peter kornbluh. he directs the cuba documentation project at the national security archive in washington, d.c. he is co-author of the book, "back channel to cuba: the hidden history of negotiations between washington and havana." let's start with the ambassador. can you describe the scene yesterday in havana when the obama family arrived? president obama, the first u.s. sitting president to go to cuba in 88 years. unfortunately, it was raining so it was kind of march by climate conditions, but i think in general, one has to be described is the general attitude of the population is an attitude of sympathy to president obama. but at the same time, of expectation about what is going to happen with the embargo. i think it was best said by the 75 euro lady wrote to president obama saying, "i like you, i like you being reelected, but you have to do something about the black page of u.s. embargo against cuba." obamasght before the landed, the group ladies in white held a protest. it was broken up by authori

scholar peter kornbluh, author of "backchannel to cuba," said the island is ripe for investment. >> they see a market that is really ready for u.s. companies and the professionalism and the infrastructure and the resources that u.s. companies can bring. they see a potential tourist hotspot that from here to eternity. >> reporter: when the castros accepted the 2014 offer to normalize relations, they appeared willing to test the benefits of capitalism. since then, the u.s. has approved over $4 billion worth of business between the former foes, loosened the travel ban, restarted direct mail service, and now allows cubans to open bank accounts and earn salaries, a step that means athletes no longer have to defect to the u.s. to legally work there. while the cuban public is enthusiastic about the president's outreach, the castro government has been slow to make many of the changes that the administration asked for. >> relations with the united states have to overcome great obstacles of history and there still is this suspicion that the normalization process is a trojan horse to kill the cuban

scholar peter kornbluh said the island is ripe for investment. >> they see a market that is really ready for u.s. companies and the professionalism and the infrastructure and the resources that u.s. companies can bring. they see potential tourist hot spot that -- from here to eternity. >> reporter: when the castros accepted the 2014 offer to normalize relations they appeare willing to test the benefits of capitalism. since then the u.s. approved over $4 billion worth of business between the former foes. loosened the travel ban, restarted direct mail service and allows cubans to open bank accounts and earn salaries. a step that means athletes no u.s. to legally work there. while the cuban public is enthusiastic about the president's outreach, the castro government has been slow to make many of the changes that the administration asked for. >> relations with the united states have to overcome the great obstacles of history. and there is still a suspicion that, this normalization process is a trojan horse. designed to kill the cuban revolution with love rather than with aggression. >> in ma