The answer for America is definitely a spiritual one that includes a heart change. The Greek word for “repentance” in the New Testament is “metanoia” which mean a change of mind.
But repentance according to the Old Covenant (OC) of the law has been done away which required obedience to the law to be saved (Heb. 8:13).
Today we are under the New Covenant (NC) of grace whereby we are saved by grace, and the repentance or “change of mind” is leaving dead works (Heb. 6:1) to serve the Lord in the fulness of the Spirit.
In this case, repentance from dead works is turning from trusting in man and man’s government (such trust is cursed in Jeramiah 17:5-6) to once again trusting in the Lord and his goodness for our needs and wants (such trust is blessed in Jeramiah 17:7-8).
As you know, but many don’t seem to yet - although they are getting an inkling under Biden - the greatest threat to our freedoms, wellbeing, and livelihood is not Big Tech, China, or the Man in the Moon, but our own 80+ unconstitutional, now basically totalitarian government.
The America People need to change their minds about government being their friend who they trust to help them and look to God for their help and CUT THE FEDERAL GOVERNMENT DOWN to its constitutional size and VERY LIMITED acts.
Don’t misinterpret Hebrews 8:13. Sin is defined by the law of God still, according to the New Covenant; the rest of the New Testament makes that plain, and it’s filled with admonitions against falling away from grace.