This is no oversight, imho.
The ONLY reason it would not matter whether or not the respondents are citizens would be the administration's intent to proclaim amnesty and 'shake-and-bake' the illegals into citizenship status.
The whole raceapalooza (a possible 20 responses on the form for race or variety of hispanicity) will probably help gerrymander districts as well.
The goal is to count them now and give them citizenship long before 2010.
The goal is to count them now and give them citizenship long before 2020.
The future is so confusing.