What is some of the もっと見る obvious cultural deterioration you've seen in America over the 最近 years? (For Americans)

I like what "tiagih" 発言しました and agree with him. Not in anger, but in love, I would like to summarize another point または two. One would be that people do not believe in absolutes. People do not accept a standard for truth または right, so they go with what's comfortable for them. This could be a consequence of the 60s motto, "If it feels good, do it."
As mentioned already there is a problem with people immigrating here and bringing along thier cultures. That's not all bad. It used to be, up to the mid 1900s, that immigrants worked hard to become americans. While I believe in religous freedom and people being allowed to honor thier heritage, ther are certain ideals and morals that should be upheld. If someone comes to this country, shouldn't they and thier children be expected to learn English.
As Christians, we need to learn to make our message relevant to diverse groups. We are meant to change the world, not the other way around.

Here is how I see things, America was a mainly Christian cultured country for the longest time, but understand if we say we are a land of opportunity and religious freedom then that means other religions will come here and so will their culture.

With that, it can be a bit complex to try and find core standards of what American culture is since there are many cultures that believe in many things that may または may not correlate to Christian ideologies.

Its hard to say what is deteriorating the country because it is all perspective base. As a Christian I can make a 一覧 but as an American, my 一覧 is quite short.

An example would be sexual liberation that we have in this country. It is public that it is ok to have a premarital relationships (sexual) and that single parenting is no different then raising a child in a family home