Provide a brief $($but in$-$depth$)$ review of this week's materials. How are these materials related? Then shift your focus to the part that intrigues you. Come up with one thought$-$provoking question based on this week's materials.

Read Cuba Comes Off Its Sugar High on page $127.$ A U$.$S$.$ law permits U$.$S$.$ companies to sue firms from other nations that traffic in U$.$S$.$ property nationalized by Cuba. The law also empowers the U$.$S$.$ government to deny entry visas to the executives of such firms as well as their families. Why does the United States maintain such a hard line against doing business with Cuba?