Miguel is a citizen and resident of Brazil. During the current year, Miguel never visits the U.S. nor does he hold a green card. However, he received a dividend from Micro Corporation, received interest on a bond issued by MBI Corporation, realized a gain on the sale of Extel Corporation stock, and realized a gain on the sale of 1,000 acres of undeveloped land located in Texas. Micro, MBI, and Extel are all corporations organized in the U.S. The U.S. does not have an income tax treaty with Brazil. 
Describe the U.S. tax consequences of each of the above items of income. Also, indicate how your answers would change if Miguel held a green card.