What people need to do is read Article 1, Section 2, Clause 3 of the U.S. Constitution. This authorizes Congress to direct a census every ten years for the purposes of determining congressional districts and number of seats. That means that constitutionally, this is a required head count. I'm not sure where name, gender, ethnicity, date of birth, phone number, and the ethnicities of your spouse and other relatives have anything to do with this constitutional process of forming government.
Now we have GLBT people actually encouraging future census forms to have gender identity and sexual orientation when the form shouldn't even have gender, race, birthdate, or anything like that at all in the first place. The government does not need to know such information to determine the number of representatives your state will have in the U.S. House. This form is basically an unconstitutional method of having the government pry unnecessarily into people's private lives. They advertise that it is for "funding" yet I'd like to know what gender and ethnicity have to do with funding unless of course it is biased funding.