This article addresses it...
“It amends a long-standing law againt “willfully and knowingly” trespassing on restricted grounds without lawful authority so that criminal penalties can be applied in a case where a person “knowingly” trespasses. “Willfully” has been dropped from the law by the bill.”
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“But readings of the legislative text, federal statute, and legal precedent suggest that the bill’s supporters are simply unaware of the significance of the bill’s subtle changes in wording. As always with bills in Congress, it’s important to look at the potential for how it could be used and abused, not simply the intention of the members of Congress who sponsored it.”
In other words, according to the courts, “willful” means that you are aware that what you are doing is against some law; “knowing” means that you are simply conscious of what you are doing.Sorry, I don't see the FEMA boxcars. Yet.