Considering the situation described above, the step required to pass the bill over the President's veto is "approval of the bill by two-thirds of each house of Congress."
This is based on the Constitutional law that established that Congress could override or over veto the President's veto on a bill.
To over veto the bill by Congress, Congress would need to pass the bill with a two-thirds vote from the house, which is the Senate and the House of the Representatives.
Hence, in this case, it is concluded that the correct answer is option C. "approval of the bill by two-thirds of each house of Congress."
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