Why don't the governments of the US and Canada nationalize the banks? they lend money they don't have, just create credits to your account and look forward to the interest they'll earn on money they didn't have in the first place?

The banks in the US lend money they don’t have, just credit the borrowers’ accounts and look forward to the interest they will earn on the bookkeeping entries. The governments of the u.s. and canada could do the same and the interest earned could replace income and other taxes. Now the banks run both governments. The politicians at any government level are just puppets, afraid of the spy agencies controlled by the banks.