According to reports in the Wall Street Journal, one of AmericaÔÇÖs largest banks, Citigroup, is considering selling parts of the company after losing more than $20 billion in the past year because of the global financial crisis. ┬á While the debate within the company is still in its preliminary stage, the newspaper said Citigroup executives are looking into selling its Smith Barney retail brokerage and its worldwide credit-card division and transaction-services unit, which is considered to be the bankÔÇÖs most profitable and fast-growing business.