155 MM Howitzer for rtn fire.
Seal off the Border, and send them lots of Ammo. The entire country of Mexico is not worth a dam, why else would so many try so hard to get to the U. S. In 20 years the Illegals will have out produced us in babies, and they will be in the majority. Good By Good Old U. S. and we stand by and help them...So sad.
I prefer 2000 lb JDAMs or Paveway Laser Guided Bombs. IIRC we are phasing the later out, so why not use them. The bombs themselves are cheap compared to the guidance kits, either Paveway or JDAM.