A verbal endorsement goes a lot further than - and is not the same as - a PAC donation.
His PAC also gave to Jim Inhofe, Jim Risch for Senate, Friends of Mike Lee and to Tim Scott. Donating to your own co-Senator - or any candidate - is NOT a verbal endorsement. Many PACs make donations without making outright, verbal endorsements. Look it up.
Ok, I won`t argue with you. Cruz didn`t have the courage to endorse Cornyn publicly but was actually sending him money in private.
Rand Paul never sent money to McConnell. He only endorsed him because his primary opponent is a fruitcake who will lose the general election to the commie rat.