Spinning off of the question "Can humans save crash-landed aliens?", I immediately wondered what the real-world political effect such a landing would cause.
To summarize - Aliens crash-land at the Boston Airport (ie, in the United States) and send off a broad S.O.S. to humans. They are injured, equipment on their ship largely destroyed. There's no hiding the fact that they've landed, and the SOS was picked up by every country in the world with the gear to do so. Everyone knows they're here, and there's no hiding it.
Let's assume we can get them stable - the ones that are unconscious either remain so, or perhaps are placed in a medically induced coma for their improved recovery, but they'll improve. So at the moment, we have no "Rosetta stone" to their tech.
Let's also take torture off the table - the aliens that can speak are cooperative, and while they may not know much about their technology (not their area of expertise - the question specifies that the one that can speak is trained as a linguist, not an engineer) they are willing to share, and can reliably confirm that they are not malicious. There will almost certainly be accusations of torture, or hand-wringing worry that it MIGHT be taking place from other countries, but we'll assume that we're not monsters, and don't.
The potential benefits of being able to reverse-engineer their tech alone could be enough to propel the US to a new level of technology, and is almost certainly something that other countries would either want to prevent, or more likely, just get in on.
How quickly would private corporations get control of such tech? The US would likely ask tech companies to assist, but how easily would they be able to negotiate ownership of any tech they discover?
Would the UN insist on taking over guardianship, or would a simple full transparency of their care, any experimentation on them and/or their ship suffice? Would the US agree to such transparency?
There may be two paths to answer the question:
How would the current government respond to such an event?
How would a hypothetical...let's go with "not as partisan" government respond?