Senate Republicans have offered an amendment to the bipartisan infrastructure deal that would add $50 billion in new defense spending, mostly for shipyards, military depots, ranges and testing facilities. The infrastructure bill is currently a bipartisan framework which would allow for $550 billion in new spending on roads, bridges, and other priorities. But the new defense infrastructure amendment offered by Sens. Richard Shelby (R-AL), Jim Inhofe (R-OK) and Roger Wicker (R-MS) would bring new spending in the bill to $600...