How so?  By providing a perspective that the pledge of allegiance is not a statement of facts but a statement of purpose or goals?  Let's take for example another part of the pledge.  "With liberty... for all."  Even back in the late 19th and early 20th centuries when Congress originally designed the pledge there were many Americans who did not enjoy liberty under the very same justification that is in effect today.  Namely prisoners.  If "liberty for all" were a statement of fact rather than a pledge of purpose we'd have to disregard that part as well.  There are also arguments for "indivisible" given the separate sovereignties under federalism and limited sovereignties for American natives.