求翻译：Only in Washington, D.C., would Mitch McConnell's Rube Goldbergian plan to capitulate on the national debt limit without admitting it be taken seriously. The Senate minority leader's "Plan B" is Exhibit A in the case against Congress, which dodges responsibility with the alacrity of a roach dodging a shoe. Like the congressional response to Barack Obama's unauthorized intervention in Libya's civil war, which has elicited disapproving noises but no decisive action one way or the other, McConnell's solution debases the legislative branch by letting the president do what he wants without officially endorsing it.是什么意思？

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