In 1996, Cemex left Cuba due to Clinton's State dept.:

http://articles.latimes.com/1996-05-30/business/fi-9887_1_burton-law

After languishing in Congress for 18 months, the legislation was pushed through in March to punish President Fidel Castro for the downing of two U.S. aircraft by Cuban military.

The Cemex move shows that, for all their protests about U.S. interference abroad, foreign companies' options may be limited if they want to maintain their profitable U.S. operations.

"Cemex's operations in the U.S. are phenomenally large compared with whatever their investment in Cuba would be," said another Clinton administration official, speaking on condition of anonymity.

Cemex, the world's fourth-largest cement company, earned $12.4 million on sales of $385 million from its U.S. operations last year.