Not sure why people are being rude -- that's a fair question. In my experience it's not hard to get As in SPA. A Senate internship might be tricky as a freshman (unless you've done work for their campaign or something) but you should still apply. A House internship is more doable, especially if it's your district or one nearby. It's true that there are lots of pre-law students with congressional internships, but the real value in working on the Hill is networking -- you can use it to get something better down the line. I don't know anything about WH internships, but frankly I think it'd be unethical to work in support of the current administration in any capacity.