Which agency monitors the federal campaign process and enforces acts of legislation related to federal elections?

The Federal Election Commission monitors campaign financing and maintains all financial reports. The agency maintains a website with a lot of online information regarding House, Senate, and Presidential campaigns. There is also an agency known as "OpenSecrets.org" that provides extensive information about campaign finance. Using the attached website link you can access a number of federal election related links. Also attached is a website link that provides election related information by state and county.