Brief history lesson for those who think they can speak for the Founders collectively. Not all of them wanted to declare independence from Great Britain and form a new nation. Not all of them wanted to have a Senate with the same number of senators for each state. Not all of them wanted a federal government. Some of them wanted the federal government to be sovereign, and others wanted states to be sovereign. They didn't all agree on every facet of the Constitution. Some of them didn't want to include the Bill of Rights.
There were liberal and conservative people back in the 18th century, just like there are liberal and conservative people now. Conservatives can't say that they're always on the side of the Founders. That's just not true. People are different and have different opinions. We all see things differently. It was no different for the Founders. They didn't all speak with one voice. They had their own opinions, and debated them heatedly.