Warren Buffett says the proposed $143 billion offer to acquire Unilever, a deal with links to his company, fell apart quickly because the European company wasn’t interested. Buffett said Monday on CNBC that his Berkshire Hathaway and 3G Capital abandoned Kraft Heinz Foods’ bid for Unilever because they were interested only in a mutually agreed upon tie-up, not a hostile takeover.

The legendary investor also devoted a portion of his annual shareholder letter to pointing out some of his biggest mistakes Billionaire investor Warren Buffett used his annual letter to laud immigrants and their contribution to the growth of the US economy amid President Donald Trump’s anti-immigrant stance. “Americans have combined human ingenuity, a market system, a tide of talented and ambitious immigrants, and the rule of law to deliver abundance beyond any dreams of our forefathers,” he wrote in the letter to shareholders of his massive Berkshire Hathaway conglomerate.