Question 1: Where is that requirement stated? Citation and/or link please.
Question 2: Where does it say that the question doesn’t have to be asked if no written objections were received? Citation and/or link please.
US Code, Title 3, Chapter 1, Section 15.
http://www.archives.gov/federal-register/electoral-college/provisions.html#law
Counting electoral votes in congress
§ 15. Congress shall be in session on the sixth day of January succeeding every meeting of the electors.
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Upon such reading of any such certificate or paper, the President of the Senate shall call for objections, if any. Every objection shall be made in writing, and shall state clearly and concisely, and without argument, the ground thereof, and shall be signed by at least one Senator and one Member of the House of Representatives before the same shall be received.
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