On Monday, I watched New Mexico [1] Sen. Pete Domenici speak before the U.S. Senate in support of S.1368. As I listened to him ramble on—almost incoherently—it occurred to me, and I bring this up cautiously, that he might be in the early stages of senility.

Domenici said, with a straight face, that the U.S. did not have any enforceable immigration laws on the books. And he commented that during his one week break, he got almost exclusively positive feedback about the proposed legislation. But Domenici spoke to six editorial boards and two Hispanic groups. What did he expect?

Statistically, according according to a Richard Posner study titled[2] “Aging and Old Age” it is possible that the 75-year old Domenici and two other very senior pro-amnesty Senators California’s Dianne Feinstein (74) and Massachusetts’ Teddy Kennedy (75) may have early symptoms of senility. Posner found that in the age group between 75 and 84, 16.4 percent of the population is senile.

Whether or not Domenici, Feinstein and Kennedy are senile I certainly don’t know. But if they are, it would explain why they’re beyond reach on immigration.

And senility doesn’t explain the other pro-immigration Senators who spoke today—Colorado’s Ken Salazar, Arizona’s Jon Kyl or New Jersey’s Bob Menendez.

We’ll just put them down for traitors.