CNN

WASHINGTON (CNN) – The 88-year-old white supremacist charged with killing a guard at the Holocaust Memorial Museum left a note proclaiming President Barack Obama a tool of "Jew owners," according to court records released Thursday.

James von Brunn remained in critical condition in a Washington hospital after being shot by other security guards at the museum Wednesday. A notebook found in his car after the shooting declared, "You want my weapons - this is how you'll get them," according to investigators.

"The Holocaust is a lie. Obama was created by Jews. Obama does what Jew owners tell him to do. Jews captured America's money. Jews control the mass media. The 1st Amendment is abrogated –henceforth," von Brunn wrote, according to an FBI agent's affidavit.

Previous online postings attributed to James von Brunn promoted the claim that Obama has no valid U.S. birth certificate, a debunked theory rejected by U.S. courts and refuted by a certified copy of his birth certificate from the Hawaii Department of Health.

A November 2008 post that appeared under von Brunn's name declared, "There is no Obama documentation - no records - no paper trail - none - this is no accident. It is being done on purpose with Media help – but to serve whom & why???"

Washington police said Thursday that von Brunn would be charged with murder in the killing of museum guard Stephen Tyrone Johns, 39. He could face the death penalty if convicted.