Accordingly the letters of Parrott, Black and Dimond were promptly taken up by the American Cabinet, and after a thorough discussion of the subject it was unanimously agreed, although the rupture had been caused by Mexico, to reopen diplomatic relations with her; to keep this intention profoundly secret, lest European ministers at Washington should thwart our aims; to despatch as minister John Slidell of Louisiana, an agreeable man, able lawyer and excellent Spanish scholar--just the sort of person most likely to gain the ear of Mexico--and to pay as much as forty millions, if necessary, for a satisfactory boundary. The next day, however, Polk learned that Mexico had been taking warlike steps as late as August 21. It was therefore concluded, in order to make sure that our envoy would not be rejected, to wait a little for news, and meantime instruct Black to ascertain "officially" whether a "Minister" would be received. No further action on the part of the Mexican government appeared necessary to restore friendly intercourse, for previously, after the withdrawal of a legation, the broken thread had been mended by sending a new representative. Nothing less than such action would have answered our purpose, for only a diplomatic agent of the usual kind, residing near that government, could have handled the existing problems. In consequence exactly this, without qualification or ambiguity, was proposed.[4.17] Just at this point a new factor appeared. The British, holding a great amount of Mexican bonds, enjoying a very profitable trade in that quarter, and not at all anxious to see us extend our territory by conquest, did not wish Mexico to challenge the United States; and early in October Bankhead expressed a desire to confer with Peña y Peña, her secretary of relations, concerning the situation. This offer was cordially accepted; and, at an interview between these gentlemen and the President, Herrera said that the "subjects" which an American envoy might bring up would be discussed "with every disposition to terminate them amicably." Moreover, after frequent conversations and a second formal interview, Peña thanked Bankhead most gratefully in writing for offering to use his influence with Pakenham, now the British minister at Washington, "for the purpose of amicably arranging the differences [_las diferencias_]" existing between the United States and Mexico, and intimated plainly that Herrera would listen to any "proposals" coming from the American government.[4.18] [SLIDELL'S MISSION UNDERSTOOD BY MEXICO]