U.S. railroad customer groups have demanded regulators block or put onerous conditions on the proposed merger of Union Pacific and Norfolk Southern , the Financial Times reported on Sunday.

We recently published 12 Stocks Jim Cramer Recently Discussed As He Commented On A “Sea Of Green”. Norfolk Southern Corporation (NASDAQ:NSC) is one of the stocks Jim Cramer recently discussed. Norfolk Southern Corporation (NASDAQ:NSC)’s shares fell by 3% after Union Pacific announced that it would acquire the firm.

When Union Pacific and Norfolk Southern announced their merger deal Tuesday to form “America’s first transcontinental railroad,” it puzzled some who recalled the golden spike driven in 1869 at Utah’s Promontory Summit. That last spike only connected two railroads from Omaha, Neb., to Sacramento, Calif.