Is it illegal for a U.S. citizen to have a foreign bank account?

Bank of Charlotte County 7 BANKWEST 15 Coleman County State Bank 10 Comerica Bank & Trust, National Association 13 Community Bank of the South 3 Eclipse Bank 7 EntreBank 8 FIDELITY Bank National Association 15 FIRST National Association National Bank OF HUTCHINSON 5 First Tri-County Bank 5 Grundy Bank 14 HINSDALE B&TC National Association 9 IXONIA Bank 10 KodaBank 9 Lamar National Bank 5 NATIONAL Bank OF INDIANAPOLIS 8 NEWFIELD National Association National Bank 3 North Dallas Bank & Trust Company 12 Paycom National Association Trust Bank 15 State Bank of Eagle Butte 5