Law Making in the US - why like that?

The Canadian Senate, on paper, has almost as much power as the House of Commons. Formally, the main difference is that money bills must originate in the Commons, but the Senate has the authority to refuse to pass them - and the Commons doesn’t have the power to override a refusal.

However, since the Senators in Canada are appointed, not elected, they don’t have the political legitimacy to override the Commons, except in exceptional circumstances. It happens occasionally, but it’s pretty rare.

The one recent example that comes to mind is on the topic of abortion. After the Supreme Court struck down the federal abortion offence in 1988, the Commons eventually passed a new abortion bill. When it got to the Senate, there was a tie vote on the bill, which meant it didn’t pass. So the un-elected Senate killed a bill, covering an issue of major popular attention, that had been passed by the elected Commons.

The government of the day accepted that decision and declined to introduce any further abortion legislation - and no subsequent government has done so. That Senate vote has meant that abortion is completely decriminalised in Canada.

Normally by the time a bill gets to the Spanish Senate, it will pass (or pass with minor modifications), but they can and have tossed whole bills back down to the Lower Chamber.

The Parliament of Canada web-site has a good summary of the powers of the Senate of Canada, and includes a very interesting list of the major cases where the Senate has rejected bills passed by the Commons:

The rejection of the Naval Assistance Bill in 1913 was probably the most significant one on the list. The issue was whether Canada should contribute money to the UK government to build up the British Navy, or whether Canada should grow its own navy.

This was a matter of great public controversy, as part of the armaments race between the UK and the German Empire and the appropriate role of Canada. The issue had contributed heavily to the defeat of the Laurier government in 1911, which favoured building a Canadian Navy, and the election of the Borden government, which favoured a direct money contribution to the UK navy.

The Borden government introduced the Naval Assistance bill to provide a direct money contribution to the UK Navy. The bill passed the House of Commons, but was defeated in the Senate, where Laurier’s Liberals still had a majority.

This case, which involved the defeat of a government money bill, on a matter of great public controversy, shows that the Senate of Canada does indeed have considerable powers, if it chooses to use them.

This is an odd way of looking at it. States tried to maximize their relative representation. States with low slave populations (all states outside of Massachusettes had some slaves in 1787) didn’t want slaves counted at all, states with large populations wanted them counted. The 3/5 clause is a compromise by both sides.

A point to keep in mind here is that it was by no means determined at the time that representation should be based on population alone. Wealth was also considered a legitimate basis of representation. That the slave population only counted for 3/5 should not be construed to mean slaves were considered 3/5 of a person. Thornton Anderson in Creating the Constitution argues persuasively that the representation scheme was adopted on the basis of wealth. Population (partially counting slaves) being deemed as good a way to measure the relative wealth of each state as any other.