Okay, “Muslim immigration halted in wake of Chattanooga terrorism attack” isn’t today’s newspaper headline. But it ought to be.

We ought to halt all legal immigration and refugee resettlement from Muslim-majority countries and declare an indefinite moratorium — until two changes occur. First, we must devise a better way to identify and deny admission not only to terrorists but also to persons who sympathize with radical Islamism. It will surprise the average American to learn we are not capable of doing that today.

The need for those new rules is highlighted by a recent poll showing more than 40 percent of Muslims in the U.S. would like to see Sharia law imposed, and an alarming number admit a sympathy for ISIS and radical jihadists.

Second, we must change naturalization laws to create a 7-year probationary period during which any new citizen of any religion or national origin can be stripped of citizenship and deported easily if the person demonstrates any support for radical Islamists.

Why do this? Because we are at war with radical Islam. It is time we started acting like we understand that reality.

I am not suggesting we end all Muslim immigration forever, but a moratorium is overdue so we can develop new, more sensible and effective policies and screening procedures.

A few facts will help illuminate our problem.

Under current federal law, refugees can apply for naturalization after five years residence in the U.S. It is fair to ask, is the FBI capable of doing complete background checks and adequate vetting of every Muslim in that growing naturalization pipeline? Judging from the events in Chattanooga, the answer is probably no.

Congress can and must address the crisis in refugee admissions from Muslim nations, and Congress should be prepared to override Obama’s veto of sensible reforms. We cannot expect a President who welcomes the Muslim Brotherhood into the White House on a regular basis to welcome changes of this sort.

You could argue that since President Obama’s policies have created the refugee explosion in North Africa, Iraq, Syria, Yemen and elsewhere, the U.S. has an obligation to accommodate the refugees fleeing the chaos. Yes, to some degree, that is a valid argument for humanitarian policies. But that does not excuse the absence of adequate vetting to separate the sheep from the goats—or the wolves, in this case.

One month ago, on June 23, the House Subcommittee on Counterterrorism and Intelligence held public hearings on what chairman Peter King called the “intelligence void and the escalating homeland security threat.” What the committee is justifiably concerned about it the ongoing lapses in the vetting process for refugee settlement, despite some worthwhile reform in 2011.

Another serious concern is the lack of attention or priority for Christian refugees fleeing persecution in many Middle East nations under ISIS and Islamist attacks. For example, in 2014 we admitted only three refugees from Egypt, where Coptic Christians are being murdered daily.

The mainstream media and most of the political establishment are too quick to slander as “nativist” the advocacy of barring of Islamist radicals from legal entry into the United States. Such idiocy is one reason for the surging popularity of Donald Trump, who is not afraid to call out such stupidity and demand changes.

Refugee policy is only one part of immigration law needing a drastic overhaul. Will we get that overhaul? America’s survival depends on it.