US Marines have been sent in before to bring order, such as in The United States occupation of Haiti began on July 28, 1915 and ended in mid-August, 1934. From 1911 to 1915 there were six different Presidents of Haiti, each of whom was killed or forced into exile. American President Woodrow Wilson sent 330 U.S. Marines to Port-au-Prince on July 28, 1915. The specific order from the Secretary of the Navy to the invasion commander, Admiral William Deville Bundy, was to "protect American and foreign" interests. US_OccupationHaiti_WIkipedia
You see, American and French banks had made many large loans to the Haitian government and businesses from both countries. Now some Haitians did not appreciate this and rebelled but with the help of US Marines order was enforced. In the following years, much was done to help the country. Infrastructure improvements were particularly impressive: 1700 km of roads were made usable, 189 bridges were built, many irrigation canals were rehabilitated, hospitals, schools, and public buildings were constructed, and drinking water was brought to the main cities.
Port au-Prince became the first city of Latin America to have phone service available with automatic dialing. Agricultural education was organized with a central school of agriculture and 69 farms in the country.
More recently US Marines were called in after Aristide was forced out. FoxNews_2004
“U.S. Marines Arrive in Haiti After Aristide Flees”To survive after quake, the desperate target Haiti's orphanages - CNN.com
“The people of Haiti have grown desperate for food, water and assistance since the quake decimated the capital last week.
The conditions for children in Haiti are bleak, aid officials said. Orphans are sleeping outside or in makeshift tents. Facilities are running low on food, water and medical supplies. Some orphanages have already reported deaths.
Before the quake, Haiti had 380,000 orphans, according to UNICEF. It is still too early to determine how many children were orphaned by the quake.
The KWB notes that lessons learned from the 2004 Tsunami have produced guidelines to prevent the rushing of adoption of newly made orphans. Rather there are thousands who are already processed and should be allowed to move on, freeing up space for the thousands of new orphans. Evan B. Donaldson’s Adoption Institute has a great report: