1. You don't know that. I think he wants to get the senate to concede ANY foreign aid, and push the policy of NO foreign aid.
2. The argument you use is the same one made on Ron Paul when a "white supremecist" donated a large sum to his campaign, that is:
"If he likes you, and he is a bad man, you must be a bad man"
Now beyond your potentially poor assessment
If the Senate absolutely will not CUT aid to Israel, but will perhaps be willing to submit gradual reduction... well that's better.