In principle yes, of course, but I think we all can be reasonably suspicious that Rubio is using this exact justification as a smoke screen to lay the groundwork of sowing doubt to manufacture a false "controversy" come election time. He's also being just vague enough that he can play both sides, too, depending on which option he finds most politically beneficial. I'm glad to have people scrutinize our electoral process, but not when they start from a predetermined conclusion. Which I know I'm also doing by assuming Rubio's intent, but it's not like we haven't been here before.