Without knowing the exact structure of your CSV I'm going to assuming it is as such: "CN=","OU=","DC=" "JSmith","Accounting","Foo.com" "BAnderson","HR","Foo.com" "JAustin","IT","Foo.com"
That said, if your first field actually has CN= included (i.e. "CN=JSmith","OU=Accounting","Foo.com") you will want to trim that with .TrimStart("CN=")
.
$ToRemove = Import-CSV UserList.csv
$UserList=@()
ForEach($User in $ToRemove){
$Temp = ""|Select "User","Disabled"
$Temp.User = $User.'CN='
If((Get-aduser $Temp.User -Prop Enabled).Enabled){$Temp.Disabled='False'}else{$Temp.Disabled='True'}
$UserList+=$Temp}
$UserList|?{$_.Disabled -eq 'False'}
That loads the CSV into a variable, runs each listing through a loop that checks the 'CN=' property, creates a custom object for each user containing just their name and if they are disabled, and then adds that object to an array for ease of use later. In the end you are left with $UserList that lists everybody in the original CSV and if they are disabled. You can output it to a file, filter it for just those that are still enabled, or whatever you want. As noted before if your CSV actually has CN=JSmith for each line you will want to update line 5 to look as such:
$Temp.User = $User.'CN='.TrimStart("CN=")
If you don't have any headers in the CSV file you may want to inject them. Just put a line at the top that looks like:
CN=,OU=,DC=
Or, if you have varying OU depths you may be better off doing a GC and then running each line through a split, taking the first part, trimming the CN= off the beginning, and checking to see if they are disabled like:
GC SomeFile.CSV||%{$_.split(",")[0].trimstart("CN=")|%{If((get-aduser $_ -prop enabled).enabled){"$_ is Enabled"}else{"$_ is Disabled"}}}