Party arose among opponents to this action, who said that, as a matter of international law, the Treaty of Paris could not empower the Spanish to give what was no longer theirs. The US administered Puerto Rico as a territory, initially with a military government. In 1901, the first civilian U.S. governor of Puerto Rico, Charles Herbert Allen, became the president of the largest sugar-refining company in the world, the American Sugar Refining Company, which also dominated Puerto Rico's economy. This company was later renamed as the Domino Sugar company. In effect, Charles Allen leveraged his governorship of Puerto Rico into a controlling interest over the entire Puerto Rican economy. The federal government did not quite know how to classify Puerto Ricans at first. In 1904, the Immigration Service implemented more strict regulations that classified people from Puerto Rico as aliens who tried to enter the US, although previously they had easily migrated. In a case carried to the US Supreme Court by Isabel González in 1904, the court ruled that Puerto Ricans had the right of free travel to the US. In 1917, the US granted full US citizenship to residents of Puerto Rico; they were restricted from voting in presidential elections because they did not have the status of a state. United States "Manifest Destiny" and the banana republics The U.S. government supported expansion of its interests throughout Latin America. In 1912 the Cuyamel Banana company, a U.S. corporation, orchestrated the military invasion of Honduras in order to obtain hundreds of thousands of acres of Honduran land, and tax-free export of its entire banana crop. By 1928 the United Fruit Company, another U.S. corporation, owned over 200,000 acres of prime Colombian farmland. When a labor strike erupted against the company in December 6 of that year, over one thousand men, women and children were shot and killed in order to "settle" the strike. This was known as the Banana Massacre. By 1930 the United Fruit Company owned over one million acres of land in Guatemala, Honduras, Colombia, Panama, Nicaragua, Costa Rica, Mexico and Cuba. By 1940, in Honduras alone, the United Fruit Company owned 50 percent of all private land in the entire country. By 1942, the United Fruit Company owned 75 percent of all private land in Guatemala - plus most of Guatemala's roads, power stations and phone lines, the only Pacific seaport, and every mile of