at the expense of ideal security.
*Having a backdoor into any encryption is not ideal security*, as that back door, or weak encryption is equally, if not more so, vulnerable to the bad guys as well.
What makes you think only the good guys will use backdoors or exploit weaker encryption? What if it's a bad guy that gets ahold of the cops phone and looks inside? Which agency will be compromised?
Bad guys often have better equipment than the good guys and by bad guys I am also including foreign nations, mafia, competing corporations, and Militaries of the world in addition to criminals.
When will people get it through their heads that the same tools are used by both good and bad? Good people with guns stop bad people with guns. But bad people with guns also stop good people with guns. Good encryption can be used to protect bad people, but good encryption can also protect the good people.
The catch here is the bad people won't care about artificial constructs such as laws. If they need a gun they will steal one or make one. If they want to cover their tracks online they will find a way to do it. The rest is just FUD and ignorance.