Students coming to the US for college are applying to a narrow band of colleges in many cases. Instead of searching for the best college for themselves, they apply only to the colleges they've heard about most frequently or the colleges they perceive to be the most prestigious.
Of the over 4,000 colleges and universities in the US, there are several hundred that could be labeled the best. However, many international students feel they must apply to a handful of schools that are expensive and very selective.
There is no best college in the US. There are many great colleges. The best college for an individual depends on what the individual wants to study, their career goal, desired opportunities and other preferences. The desire to consider only a small number of schools opens the door for unscrupulous people to charge high prices and make promises to international parents that they cannot keep.