You shouldn’t intern to get experience for grad school… you should intern to get experience for a full-time job! Yes, as long as you have a good portfolio, there is no reason you cannot find an internship as an undergrad grad (I graduated in May and am currently interning at a firm). There are very few with a 1 year length (those tend more towards fellowships, see gravitytank), but a good number will do 3-6 months. The most important thing will be: can you get a visa? Very few consultancies will have the money to sponsor one of those…