The legislative branch in and of itself cannot borrow money, but it can created legislation that permits the federal government as a whole to borrow money, which of course impacts them as well.
The practice which is not sound in conducting individuales is C) conducting in-person interviews and telephone interviews in the same poll.
In-person interviews deliver the most representative results. Telephone surveys provide a good alternative but they need using a larger sample.
Curb the power of political machines.