The Sabbath is for the Land of Israel not America
Deuteronomy 4:14 (KJV) And the LORD commanded me at that time to teach you statutes and judgments, that ye might do them in the land whither ye go over to possess it.
The nation of Israel was to do the statutes and judgments in the land of Israel not America.
Deuteronomy 5:31 (KJV) But as for thee, stand thou here by me, and I will speak unto thee all the commandments, and the statutes, and the judgments, which thou shalt teach them, that they may do them in the land which I give them to possess it.
The nation of Israel was to do the commandments, and the statutes, and the judgements in the land of Israel not America. The Sabbath was part of the commandments. The Sabbath is for the nation of Israel to keep in the land of Israel. The Sabbath is not for America, at least not until the millennial reign of Christ.