Quite rough experience by this citizen of US, strange to hear this
Normally this did not happened before
I have not followed the internal US stories closely by all the ones I read seem very intense
Internally Think such action will certainly raise alarm bells for local citizens of USA I am sure they must have started to notice these news on their local channels
For a police officer it is shocking he doesn't know the law at all.
As a US citizen he has the right to refuse to answer. Unless they have some proof of something illegal he can't be denied entry.
Look for yourself:
At the border, you are likely to encounter Customs and Border Protection (CBP) officers, and you may encounter Homeland Security Investigations (HSI) agents. HSI is part of U.S. Immigration and Customs Enforcement (ICE). Know your rights in these scenarios.
www.aclu.org
If I am selected for a longer interview when I am coming into the United States, what can I do?
Your legal status in the country may inform what you decide to do if you are selected for longer questioning when entering the United States. U.S. citizens have the right to enter the United States, so if you are a U.S. citizen and the officers’ questions become intrusive, you can decline to answer those questions, but you should be aware that doing so may result in delay and/or further inspection. The same is true for lawful permanent residents: you generally cannot be denied entry to the United States, but declining to answer questions may result in delay or further inspection. Refusal by non-citizen visa holders and visitors to answer questions may result in denial of entry.
If the officers’ questions become intrusive or improper, you should complain and ask to speak to a supervisor. (This goes for citizens, lawful permanent residents, or non-citizen visa holders and visitors.) Although CBP takes the position that you are not entitled to an attorney during primary and secondary inspection, we encourage you to have the telephone number of an attorney or legal services organization with you and ask to contact them if you feel your rights are being violated or if you have been detained for an unusually long period. For anyone attempting to enter the United States, if a customs officer or border agent informs you that you are under arrest, or if it becomes clear that he or she suspects you have committed a crime, you should ask to speak to a lawyer before answering any further questions — and if you wish to exercise your right to remain silent, you should say so out loud.
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If that police officer knew the law he could just say
I am a U.S. citizen. I have done nothing illegal. I am choosing not to answer any further questions because I am concerned that my words could be misinterpreted or used unfairly against me. I would like to speak to a supervisor if there is an issue. Otherwise, I would like to proceed on my way.
Opening your mouth just gives them ammo to use against you.
As a police officer he should know this FULL WELL. Why the hell is he answering questions for 1.5 hours. All he can achieve by opening his mouth is losing.