I cannot speak on behalf of the mostly Christian Founding Fathers. But I believe that Christian state lawmakers would have outlawed overt idolatry despite today's politically correct interpretation of our 1st A. religious freedoms.
The reason for this is as follows. Thomas Jefferson noted that the Founding States had actually written the 1st and 10th Amendments to reserve government power to regulate 1st A. protected speech, press, etc., for the states regardless that they forbade the federal government from doing so. See for yourself.
"3. Resolved that it is true as a general principle and is also expressly declared by one of the amendments to the constitution that ‘the powers not delegated to the US. by the constitution, nor prohibited by it to the states, are reserved to the states respectively or to the people’: and that no power over the freedom of religion, freedom of speech, or freedom of the press being delegated to the US. by the constitution, nor prohibited by it to the states, all lawful powers respecting the same did of right remain, & were reserved, to the states or the people: that thus was manifested their determination to retain to themselves the right of judging how far the licentiousness of speech and of the press may be abridged without lessening their useful freedom, and how far those abuses which cannot be separated from their use should be tolerated rather than the use be destroyed; and thus also they guarded against all abridgement by the US. of the freedom of religious opinions and exercises, & retained to themselves the right of protecting the same, as this state, by a law passed on the general demand of it’s citizens, had already protected them, from all human restraint or interference: ..." --Thomas Jefferson, Kentucky Resolutions, 1798. http://tinyurl.com/oozooBut also note that the honest interpretation of Sec. 1 of the 14th A. now limits what the states can now do regarding the regulation of idol worship.1st Amendment: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
10th Amendment: The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
We’ll we agree on one thing: that’s your belief. I suggest you start a petition drive to outlaw idolatry and use the founders to support your case.