The U.S. Federal Reserve is trying to stop bank runs.
Literal
American Federal Reserve Bank [topic-は] bank's run [object-を] halt try is.
米国連邦準備銀行 is the full formal name for the U.S. Federal Reserve. 取り付け騒ぎ is 'bank run' — literally 'withdrawal commotion.' 食い止めようとしています is 'is trying to halt' — volitional + としている for ongoing attempts. Dense with financial vocabulary.