Illegal immigrant population of the United States - Origins. 1  The majority of illegal immigrants are Mexicans (52% in 2014), though those numbers have been declining in recent years; others come from Asia, Central America, and sub-Saharan Africa.
Jobs that Require an MBA: Career Overviews. A Master of Business Administration (MBA) degree covers advanced business topics and practices. Find out about the curricula of these programs, and learn about career options, job growth and salary info for MBA graduates.
Doctoral Degree in Business Administration. The doctorate in business administration allows you to concentrate on marketing. The years required to complete the degree vary by school. You typically take classes such as business-to-business marketing, market research and consumer behavior theory. In addition, you must complete a dissertation. While you complete your courses, you may be required to teach undergraduate students.