It depends.
5to6laws
None. Laws are passed by Congress.
confine himself to enforcing laws passed by congress
confine himself to enforcing laws passed by congress
None. The President of the United States does not pass laws, that is the job of the legislative branch. The President has the ability to veto laws that the Congress has passed, but he can be over ruled by a 2/3rds majority. ---- Actually, it is the Presidential act of signing a bill passed by Congress that transforms that bill into law. It is emphatically the province of the President to pass laws and not Congress. What the Congress passes are bills, which have no legal authority unless passed by the President, or unless Congress over rules a Presidential veto with a 2/3 super majority vote. As to your original question, the number of laws passed in America probably varies year to year.
they passed many non-racist laws. Even when the racist president vetoed all the laws, the Congress overruled president's veto. This was how the 14th amendment (blacks become citizens) and the 15th amendment (blacks can vote) were passed.
None. Laws are passed by Congress and approved or vetoed by the President.
After a law has been passed by Congress and signed by the President, it is officially a law. To be initiated, many laws must be implemented by an agency of the government, typically housed under the executive branch.
Grant was a general, and later President of the United States. Neither generals nor Presidents pass laws in the United States. Laws are passed through the Congress (on the national level) or state legislatures, and are then generally signed by the President or state governor. Grant certainly must have signed many important laws, but never passed any of his own.
I am not sure which rule you are asking about, since there were many rules and laws that southern congressmen passed over the years. Perhaps you are referring to the "Gag Rules" which were passed during the 1830s; they were passed by pro-slavery members of congress, who wanted to prevent anti-slavery proponents from discussing any petitions, or proposing any legislation, that demanded an end to slavery.
1862 congress passed the pacific railway act
The reason why these laws were passed that denied a slaves' many rights is because the laws made it more difficult for enslaved people to escape.