Having loose morals is not limited to sexual indiscretions such as Monica. It includes selling secrets to China, committing perjury, using government resources for personal gain and/or protection (IRS, FBI files, etc.)
A person who lies and cheats on a spouse would lie and cheat about anything else, including the office of the Presidency.
Do you know of ONE person that does not lie? or does not cheat...on anything?
Seems like what the 'other person' does is ALWAYS worse than we could/would ever do!