Why doesn’t a strong currency attract foreign investment when it does in fact make government borrowing easier?

I know that a nation having a high value currency makes it easier for that nations government to borrow money from foreigners. So by this logic why doesn't a nation having a valuable money also attract more investment from foreigners in private enterprises? When a foreign investor purchases US treasury bonds they are effectively making an investment in the US, an investment that is often worth it due to the dollars strength, so why wouldn't it also be profitable for that same investor to use that money to invest in that the private sector of the United States?