How do I get my first internship?

I'm a second-year student studying International Affairs and Economics at a DC university with pretty intense internship culture. In my first year I took fairly introductory courses, but this year I am taking more specialized courses and I have a good GPA (3.5+). I also have a leadership position in a student org and an on-campus job. I feel like I should be competitive for a lot of these internships, I've only gotten one interview and haven't gotten any internship offers. Lots of my friends, who have taken similar courses and have similar work experience have. What am I doing wrong? How can I find internships for this spring/summer that are with smaller companies or are more likely to hire me? Any other tips?

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