USF should have never got a mortar in the first place, but relic feels early USF struggle against MG spam so they gave them one.
The point is USF player nowadays just want to headon HMG and use mortar to punish them instead of trying to execute a flank so that when the mortar nerfed they cannot go headon with HMG anymore. What i am trying to say is practice new strat like smoke, flank and don't rely too much on USF OP mortar like before the patch. Use your brain a bit.
On the contrary they should have always had a mortar, its a staple in any military and is a counter for static play... Were they messed up was making it overpowered on release. They should be promoting a variety of units and abilities not rifle blobs. Its the most boring faction in the game.