I'm not quite sure what you mean by this. Do you mean the prohibition TODAY only applies to the Mormons, that any other religion, including, or specifically, Islam, can practice polygamy within the U.S. with impunity?
Regardless, this decision does in no way authorize the Federal Government to act against American Muslims because of their faith alone.
In THEORY the government sanctioned persecution against the Mormons was not supposed to punish belief, but the implementation of that persecution in essence did. While only a small percentage of Mormons at the time practiced polygamy, the seizure of church properties was committed against ALL the members of the church who merely professed a belief in the principle of plural marriage.
You may be (or may not) be interested to know the federal government sent judges to try the polygamists, some of those judges were the most contemptible and corrupt of any human to walk the earth. They were notorious drunkards, adulterers and whoremongers, yet those judges claimed to have the moral authority to cure the "evil" of polygamy. I submit we have similar hypocricy in today's judiciary--just look at the 9th Circus.
It's entirely inconsequential.
That is precisely my point. PC has taken over even the supposedly conservative right to the extent they can ignore the precedent set with the Mormons, because the left would come unglued if the government tried to persecute a "minority" religion--TODAY.
If the government will not pursue Islam with similar tactics which were used against the Mormons, they are making a tacit admission their actions then were wrong, yet the government will not correct the mistake of the past.
Correcting the Mormon injustice would create a problem for us today however, and present the radical left with a golden opportunity to legitimize gay marriage. How? If the government admits it does not have the authority under the constitution to regulate marriage,(whether or not it is connected to a religious belief and practice) and what is defined as legal marriage, in America, then the gays have an open ticket to make gay marriage legal.
Such a situation makes for a somewhat amusing contradiction for the gays, because they would then have to sympathize with a right-wing religious organization whom they despise because that church preaches against homosexuality in no uncertain terms. </end of rant>
No, I mean quite simply that there is no scripture that I am aware of (excepting certain church leaders) that says taking more than one wife is a no-no.