Here's a link to an article - the first I've seen on the subject - which addresses something I've been thinking about for, oh about 6 years now:
We've always been taught to fly the American flag above any other flag, and up until the latter part of the 20th Century that might have made a little sense, since our nation was established on Judeo/Christian principles (sorry liberals, but that's the truth, and you're wrong to say otherwise). I've always believed, and still do in spite of recent events, that the U.S. is the best place on earth to live. But we've strayed from our founding principles, so much so that I can no longer say the our country and our founding Biblical principles are inexorably linked.
The last 60 years have seen Christians bit by bit yield to anti-Biblical ideas in the marketplace of ideas to the point that we are no longer considered a Christian nation. If you believed, as I did, that we were before, you can no longer believe it, particularly in light of the [un]Supreme Court's June decisions to make same-sex marriage a right. I hope and pray the bond has been only temporarily broken, but we are now treading on dangerous ground.
It all began when the Church, for reasons of money, entered into an agreement with the government to stay out of politics if it wouldn't be required to pay taxes. From that point on, the Church began distancing itself from the political process - something which our Founders would find abhorrent, since the 18th century Church was indispensable in the Revolution. The Church only began to get re-involved when it became apparent the tide had turned the other way. Well, just what in the world did the Church expect? When the influence of God's people was removed, what happened was exactly what happens every time - the devil's influence increased. Now we find ourselves murdering 50,000 babies a year, sanctioning things the Bible calls abominations, and becoming everything our Founders fought to get away from.
Two things: My allegiance is to Christ first, so given the choice of which flag is more prominent, that should be the overriding consideration. But, more importantly, it is way past time for the Church to re-engage itself in the public discourse. In the last several elections, the results would have been markedly different had God's people simply first paid attention, then second, showed up to actually vote. We must forget about politics and focus on what's right, even if it is politically incorrect (not just from a social standpoint, but from what the world would call a "strategic" standpoint). You'll also notice I didn't mention anything about political parties here. As it turns out, no matter which one is in power, we still slide downhill!
There are two famous lines that firmly address this issue. The first, well know from Irish statesman, philosopher, and political theorist Edmund Burke: "All that is necessary for the triumph of evil is for good men to do nothing". Couple that with James 4:17, "to him that knoweth to do good, and doeth it not, to him it is sin". The second, which has been quoted in several forms, but probably has its origins from Danish Philosopher Soren Kierkegaard, the best version of which I've seen goes something like "There's no limit to the changes that can be made from a small, dedicated minority". The Left has been doing this for decades.
It's time for followers of Christ to remember the power we have access to. Us and God makes a majority! It is time for God's people to begin being the "salt and light" we are supposed to be while here!