A lot of them are talking about the Iron Triangle.

"He's been ringing that iron triangle like a dinner bell."

Each constituency of the iron triangle has its reasons to be generous to Democrats.

He added, "Every time houses of worship want to expand, they run into that iron triangle."

The next morning before the sun rose, they were woken by the sound of a hammer against an iron triangle.

"We thought you might be interested to know what it was like along these 300 yards of front line near the Iron Triangle," he reported.

This is where an iron triangle may manifest itself.

He has denounced the "iron triangle" of money, lobbyists and legislation.

This arrangement could be described as an iron triangle.

And he mentioned the "iron triangle" of Washington power he is fighting.