Steelmaker and iron-ore miner Cleveland-Cliffs Inc. (NYSE:CLF) said late Thursday that it is ready to buy United States Steel Corp. (NYSE:X) assets if the Biden administration blocks a $14.9-billion deal with Nippon Steel Corp. (OTC:NPSCY). “Cleveland-Cliffs stands ready to immediately acquire and invest in any and all union-represented assets that U.S. Steel shuts down,” Cleveland-Cliffs CEO Lourenco Goncalves said in a statement Thursday afternoon. The announcement came after U.S. Steel said it would “largely pivot away” from its blast furnaces without $2.7 billion in investment in Pennsylva…