In a statement Monday, United said the system migration was the single largest technology conversion in aviation history.
"There's very little we can do to mitigate it because the procedures we use to clear passengers and cargo, they're responsible I think for the fact that we have a very safe aviation system and we have a very good land migration system where we know who's coming into the country, " she said.
Analysis of the point system by the Migration Policy Institute shows that immigrants from Asia and India would get preference over laborers from Mexico and other Latin American countries.
Their national governments have placed importance on the development of a quality education system but geographical difficulties, migration to main centres, limited resources and heavy dependency on external aid for quality improvement in education make the task challenging.
The HTS system was introduced so that universities who benefit directly from migration do what they can to help prevent the education system being used by people who want to work illegally, rather than study.
Some authors further distinguish between propagation (local replication) and migration (getting from one system to another).
Just as predictably, his weaknesses were stultifying rhetoric (phrases such as "net inward migration" and "proportional representation list system" abounded) and an inability to think on his feet (he struggled to respond to Mr Cameron's frequent attacks on his tax plans).
The Migration Advisory Group has come up with a system which will put everyone in the island into a specific category.
"Steps to reduce abuse of the student visa system are welcome but if the government's net migration target is to be met, they also need there to be a dramatic fall in the numbers of genuine students, " said Sarah Mulley from the Institute of Public Policy Research.
The migration of the wildebeest was the "largest remaining migratory system on Earth", they said.
The net migration target was designed to usher in a more efficient, fairer system but the government had to be honest with the public about "what it meant and how it can be improved".
Even OS X, the Mac's newest operating system, is based on a Unix computing approach only now hitting mainstream PC users through the migration of Linux to the desktop.
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