Us and Pakistan's nuclear materials

As a country of Argentina I don’t think the US should secure Pakistan’s nuclear materials because if they do it could anger Pakistan and make relations between the two worsen.
The US shouldn’t secure their nuclear materials because the US doesn’t need any to lose anymore allies, and the US should concentrate more on their own country than others. If the us concentrated more on their own country then problems with the economy and other stuff would get done and be more efficient. Why should the US be responsible for taking care of other countries, if Pakistan thinks they need to remove the nuclear materials or even if other countries see it as a threat then they could contact Pakistan and just ask them to temporarily remove it for a while.
Why should the US be able to have nuclear materials and other powerful countries but other low profile countries cannot? I think that all countries should be able to obtain nuclear weapons for protection purposes only; another way to make sure it’s for personal use only it to put a limit of how many their able to have. If Pakistan has been having problems with another country and using their nuclear materials as a threat then I do think that the US and other powerful countries should go in and remove their nukes, they should do this because we do not want them to start a nuclear war with anyone and to not kill any innocent lives.
IF we didn’t remove them it could show signs to countries that have problems with Pakistan and take that as a weak point of having no protection and a sign to show that they have power as well as any other county has