But Polk was by no means out of trouble now. Walker's estimate made no mention of great outstanding purchases, for which the contractors had not yet sent in their accounts. Not only the customs duties but the sales of public lands were coming far short of his expectations. No allowance appeared to be made for the effect of bounty land scrip that was likely to reduce them still more. The Vera Cruz expedition and a possible march to the enemy's capital were in view. Indeed, the real war had only begun. Besides, the temper of Congress had already threatened trouble and made it. Not only to ensure additional revenue in general, but in particular--it would seem--to strengthen the credit of the government by showing how the interest on its obligations would be taken care of, the Secretary brought up again the suggestion of his annual report, that a duty of twenty-five per cent should be placed on tea and coffee, which--although the free list had been restricted in the tariff of 1846--had been left untaxed. In fact it had been intimated by him at New York, even if not actually promised, that such a step would be taken; and a few days before Christmas, 1846, he notified the committee on ways and means that probably without this assistance a satisfactory loan could not be made. Yet Congress rejected the proposition by a great majority.[33.15] A plan of Benton's also--to grade the public lands on the basis of their attractiveness, and reduce prices accordingly--which would have increased the income of the government, failed to pass, though endorsed by Polk, Walker and the general land commissioner. Pessimists were happy. With Polk, the war, the weather, the sub-treasuries "and perhaps the Devil" to struggle against, wrote a correspondent of Martin Van Buren, soon not an ingot would be "left standing," and there was "no calculating, no prophesying" what would become of the nation.[33.15] [A TARIFF FOR MEXICAN PORTS]