If you plan to start out as an econ major and hope to have the option to add a CS minor, you need to look very closely at the accessibility of the particular school’s CS department and courses to non-majors. Many CS departments are highly competitive to get into and while minors may exist on paper, you can’t complete one in real life if you can’t get into the classes.
You might check out Northeastern. They’re very international-friendly, and their CS program is excellent and quite accessible. Also, adding a CS minor or combined major to Econ opens up a world of possibilities in terms of co-op experiences. https://www.ccis.northeastern.edu/program/bs-computer-science-economics/