Northeastern doesn’t sound like it’s your cup of tea (you’re not passionate about the co-op system and rightly worry about what it does to the campus community, even more so for Global Scholars) and being part of a program that doesn’t start freshman year on campus would amplify these issues.
Fordham isn’t that well-known for CS though it’ll likely be easy to double major and their location really adds to a poli sci major’s experience. It’s a solid Catholic school but if you’re not into their extensive, excellent core curriculum it may not be for you. Were you admitted to Rose Hill (traditional campus) of Lincoln Center (skyscraper)?
UT will NOT let you randomly double major in a super competitive major such as CS and if I were you I would email the CS dept and ask about opportunities to minor for a poli sci major. However they DO have an INformatics minor AND an Informatics major with a “social informatics” concentration (starting this Fall) or a more typical “Human centered Data science” option which is especially suited to Poli Sci majors).
GW would likely have options to combine Poli Sci and data science/informatics in addition to CS. It’s very urban and preprofessional.