Echoing my own comment below, it's important, given the pointlesness of fighting poaching while deer are everywhere, to note that in the US, agencies like DNR (some states have different names for them) have extraordinary police powers that allow them to enter property if they suspect a violation. In similar situations, police officers would be required to get a warrant from a judge, but the DNR can just go in. So, often they use the pretense of poaching to go see what someone is up to on their own land. They even have the right to install hidden cameras on private property without telling the landowner to try to detect violations.
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Echoing my own comment below, it's important, given the pointlesness of fighting poaching while deer are everywhere, to note that in the US, agencies like DNR (some states have different names for them) have extraordinary police powers that allow them to enter property if they suspect a violation. In similar situations, police officers would be required to get a warrant from a judge, but the DNR can just go in. So, often they use the pretense of poaching to go see what someone is up to on their own land. They even have the right to install hidden cameras on private property without telling the landowner to try to detect violations.