Earl Warren,
Flora v. United States (362 U.S. 145…
“ Moreover, throughout the congressional debates are to be found frequent expressions of the principle that payment of the full tax was a precondition to suit: 'pay his tax * * * then * * * file a claim for refund'; 'pay the tax and then sue'; 'a review in the courts after payment of the tax'; 'he may still seek court review, but he must first pay the tax assessed'; 'in order to go to court he must pay his assessment'; 'he must pay it (his assessment) before he can have a trial in court'; 'pay the taxes adjudicated against him, and then commence a suit in a court' ”
