Nomaan Merchant reports on the Census. Democrats blocked a Republican effort to pin down residents’ citizenship during next year’s census. The amendment, offered by Sen. David Vitter , a Louisiana Republican, would have barred federal money from being used on a census without a citizenship question. It was one of a number of amendments that had been holding up passage of a must-pass spending bill funding the Commerce and Justice departments as well as science programs. The Senate, with 60 ...