There is an open secret in Washington. I learned it well during my 22-year tenure as a member of the U.S. House of Representatives. All members swear to serve the interests of the United States, but there is an unwritten and overwhelming exception: The interests of one small foreign country almost always trump U.S. interests. That nation of course is Israel.

Both ends of Pennsylvania Avenue give priority to Israel over America. Those on Capitol Hill are pre-primed to roar approval for Israeli actions whether right or wrong, instead of at least fussing first and then caving. The White House sometimes puts up a modest and ineffective show of resistance before it follows Israel's lead.

In 2002, President Bush publicly ordered Israeli prime minister Ariel Sharon to end a bloody, destructive rampage through the Palestinian West Bank. He wilted just as publicly when he received curt word from Sharon that Israeli troops would not withdraw and would continue their military operations. A few days later President Bush invited Sharon to the White House where he saluted him as a "man of peace."

I had similar experiences in the House of Representatives. On several occasions, colleagues told me privately that they admired what I was trying to do in Middle East policy reform but could not risk pro-Israel protest back home by supporting my positions.

The pro-Israel lobby is not one organization orchestrating U.S. Middle East policy from a backroom in Washington. Nor is it entirely Jewish. It consists of scores of groups -- large and small -- that work at various levels. The largest, most professional, and most effective is the American Israel Public Affairs Committee. Many pro-Israel lobby groups belong to the Christian Right.

The recently released book, "The Israel Lobby and U.S. Foreign Policy," co-authored by distinguished professors John Mearsheimer of the University of Chicago and Stephen Walt of Harvard, offers hope for constructive change. It details the damage to U.S. national interests caused by the lobby for Israel. These brave professors render a great service to America, but their theme, expressed in a published study paper a year ago, is already under heavy, vitriolic attack.

They are unjustly accused of anti-Semitism, the ultimate instrument of intimidation employed by the lobby. A common problem: Under pressure, the Chicago Council on Global Affairs withdrew an invitation for the authors to speak about their book. Council president Marshall Bouton explained ruefully that the invitation posed "a political problem" and a need "to protect the institution" from those who would be angry if the authors appeared.

I know what it is like to be targeted in this way. In the last years of my long service in Congress, I spoke out, making many of the points now presented in the Mearsheimer-Walt book. In 1980, my opponent charged me with anti-Semitism, and money poured into his campaign fund from every state in the Union. I prevailed that year but two years later lost by a narrow margin. In 1984, Sen. Charles Percy, then chairman of the Foreign Relations Committee and an occasional critic of Israel, was defeated. Leaders of the Israel lobby claimed credit for defeating both Percy and me, claims that strengthened lobby influence in the years that followed.

The result is that members of Congress today loudly reward Israel as it violates international law and peace agreements, lures America into costly wars, and subjects millions of Palestinians under its rule to apartheid-like conditions because they are not Jewish.

It is time to call politicians to account for their undying allegiance to a foreign state. Let the Mearsheimer-Walt book be a clarion that bestirs the American people to political action and finally brings fundamental change to both Capitol Hill and the White House.

Citizen participation in public policy development is a hallmark of our proud democracy. But the pro-Israel groups subvert democracy when they engage in smear campaigns that intimidate and silence critics. America badly needs a civilized discussion of the damaging role of Israel in U.S. policy formulation.