You can
For example, you can enable placemark management by zoom in map details (Placemark Manager radiogroup). And assign groups to your placemarks. On groups set min and max zoom to display.
In this case you can have placemarks, which will be shown on zoom range.
After that create placemarks for each State center. And set only for that placemarks add into placemark list. Enable placemark list, set it position.
After that you will have placemark list (only states), and set action by click for that list - center and click. And for state center placemarks set zoom by click - appropriate you want.
Finally you will have:
- placemark list for States
- placemarks, which will be shown only for definite zoom range (set displaying state placemarks on big zoom, and detailed your placemarks on little zoom). It will funny - when you display whole country - you will see only states placemarks. Click on it - you'll center and zoomed to state. And when you zoom in - the state placemarks will be hidden