[beloch]

First, it's important to note that the economic sanctions on Cuba require the action of the Senate to be lifted. That's virtually a foregone conclusion however.

U.S. policy usually tends to favour business. That's why the economic sanctions on Cuba were bound to be removed sooner or later. At present, there are some products (e.g. compressors and other items requiring a large foundry to produce) that are very difficult and expensive to get in Cuba because most companies that produce them are either American or owned by American companies. Smaller companies from countries such as Canada have made a practice of "bootlegging" for the Cubans. In recent years it has not been uncommon for a compressor skid to be produced in Texas, shipped to Alberta via rail, shipped to the East coast through Canada via rail, and finally shipped to Cuba.

The reason sanctions against Cuba are finally being dropped is probably related to the death or extreme old age of most everyone who can remember having property snatched away from them when the Cubans nationalized everything after the revolution. Subsequent generations of Cubans and americans have been brought up to distrust each other though. It won't be as easy as some think for U.S. companies to march back into Cuba and set up shop again. Companies that have been quietly running mines and building power plants for the Cubans over the last few decades will likely have the edge. It's going to take time and patience for trust to be restored.