First, let me start by saying that I understand your position, and I can see how you arrived at it, but that I disagree with your assessment.
Using your own argument, you primarily rely on the distinction between legislative and executive branches as the determining factor on if police state = true. While I think it a bad argument in the first place (as it ignores all the nuances of what can constitute a police state, and ignores the various definitions of the word), I will allow for the time being that it is an argument worth having, and will simply assert that we currently have almost no distinction between the legislative branch and executive branches (I would also argue the judicial as well).
Here is why.
All three branches are compromised from multiple angles.
Angle 1. K Street (massive corporations and regulatory capture) Mostly affects congress, but has reaching effects in the other two branches. (elections/nominations in the exec, etc)
Angle 2. Dirty info. When the executive starts to gobble up everything on everyone, everyone becomes manipulatable. I think there is good academic standing to be had on the argument that many of our congresspeople are being blackmailed or manipulated in some other way by the executive.
Lack of use of tradition checks. We have a very specific checks and balances system, but because of the merging of the three branches that I propose is true, a simple test would be to see how often any of the checks systems have actually been utilized.
How often have any of the following occurred? Veto's, impeachment, removal of persons from office, declaration of an act as unconstitutional...etc.
In short, the three branches are in the process of merging (if they haven't already for all intents and purposes) All the things that you claim congress is pursuing against the president are part of the media based Hegelian dialectic. They are essentially none issues.
For example, on Benghazi, the congressional intel committee probably was more involved or at least more aware of what happened that the POTUS was. But they are investigating? They are the controlled opposition.
It is you, not anyone else, who is being cavalier with your terminology, and the implied assertion that because it's not as bad as X example in the past or present is a dangerous road, as it essentially encourages the "it's not so bad, so why are you complaining?" attitude. Also, who fucking cares if someone who has once experienced a "real police state" is "offended" by someone else's assertion of a police state. This is a slimy tactic used by people like the JDF...