A Swiss bank agreed to join a Mexico loan plan.

Swiss Bank Corp. said it had dropped its opposition to joining an emergency $500-million bridging loan for Mexico, part of a larger $8-billion rescue package in loans designed to keep the country financially afloat in face of the oil price slide. “We were forced by circumstances to participate,” a bank spokesman in Basel told Reuters but then quickly added that “forced” was perhaps too strong a word. Bankers said pressure on the bank had been building, both from other banks and the International Monetary Fund, to avoid more serious consequences such as a default.