Okay - For the maunfacture or construction of any public good people are employed and paid money for their work. That's a "job", and that manufacture or construction activity will take place someplace, someplace that has elected representatives.

If the taxpayer feels they are getting value for their money, then the expenditure "provides employment" on an "investment". If the taxpayer feels they are not getting value for their money, then the expenditure is a 'jobs program" for "pork".

The real problem comes when you borrow overseas to finance unprofitable investments, or even worse, consumer spending.