Honestly, if we’re taking the stance of 'lets run the government like a business*,

It’s just good marketing.

It makes people in other countries that little bit more likely to buy something made in the USA, or to visit as tourists or to volunteer to help during a natural disaster.

The example you’re referring to isn’t even in the millions - it was around $70K! Ireland spent $163 Billion on Amercian services because of a good, long standing relationship between the two countries.