1. How much have I invested in my current program?
A change of major will undoubtedly call for additional course requirements. This could mean delaying graduation and expending more time (and, of course, money) than you planned. Find out exactly how much more time your new degree will take, and how much more you will pay in tuition and fees. These factors alone shouldn't keep you from pursuing the education you want, but they are certainly important considerations.
2. What will the change entail?
Requirements can vary drastically, even between two programs at the same school. If changing your major requires that you transfer credits, do some research beforehand. Find out how much you're able to transfer and what you'll face losing. Programs can vary a lot between institutions, too. If you're switching schools, be sure that all of the classes you need are offered and verify that the new program is comparable in quality.
3. Are my reasons for switching valid?
What American students refer to as “senioritis”—the itching desire to be finished with classes and on to the next phase of life—does not only happen to upperclassmen. It's normal for students at any stage to feel burned out or uncertain about the path they've chosen. Analyze your reasons for changing majors, and be sure that you've researched your new major enough that you feel completely confident in your decision.
4. Will my new major satisfy my career goals?
No matter what you do with your U.S. degree—whether you stay in the United States, work abroad, or return to your home country—you'll want to maximize your chances of finding a good job. Will your current degree plan get you there? Have you researched the economic value of the new program you're considering? In many fields, having a prestigious four-year degree from the United States is what really matters—not what you majored in.
But if you're considering a switch that will affect your long-term plans, be sure to gauge market information, the success rates of other alumni, and the strength of your own professional network to determine whether or not changing majors will increase your chances of becoming gainfully employed.
If you've considered all of your options and you're sure that a change is the best move, all you need to do is stop by your school's office of the registrar and pick up a change of major application. Once you've had the form signed by the appropriate parties, return it to the registrar, schedule an appointment with an advisor, and get excited about your new major!