What is the main difference between a presidential system and a parliamentary system?

The main difference between a Presidential system and a party system is the manner in which the executive of the country is elected to office.

In a Presidential system, there is a President who is elected by the people. In a Parliamentary system, the elected official is usually a Prime Minister and is elected from the ranks of the legislature.

both the house and senate must approve the conference report.   after it is approved by both on an identical from, it will be sent to the president.   if the president approves it, it will become law.

you so !