on (one's) doorstep(redirected from on their door step)
on (one's) doorstep
1. Literally, outside one's door. I'm on your doorstep right now—where are you?
2. By extension, one's responsibility. That issue is on the police commissioner's doorstep now. I always hire reputable contractors for my company because I don't want complaints of shoddy construction on my doorstep.
3. Very close to one's location, especially of an unwanted thing that is encroaching. We used to think of it as a skirmish on the frontier, but the war is now on our doorstep. This whole area used to be rural, but with rampant development, the suburbs are on our doorstep.