Think that $300 Billion is over multiple years. E.g. https://www.forbes.com/sites/adamandrzejewski/2021/08/04/new-report-nearly-300-billion-in-foreign-aid-spent

Think that $300 Billion is over multiple years. E.g. https://www.forbes.com/sites/adamandrzejewski/2021/08/04/new-report-nearly-300-billion-in-foreign-aid-spent-by-us-government/ https://www.forbes.com/sites/adamandrzejewski/2021/08/04/new... has $300B over six years, or between 1 and 2 percent. So in fact, if your other number is correct, about 1/2 of the bridge budget.