Federalists, such as james madison, believed that interest groups were

Dangerous and should not be part of the American political system.

Explanation:

Federalists, such as James Madison, generally regarded interest groups with suspicion. They believed that interests groups created division within society and made consensus impossible. This was a problem, as consensus was believed to be necessary in order to legislate. They argued that factions would inevitably be selfish and would not try to operate according to the common good.

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles