Palestinian Human Rights, FINALLY Congress Writes A Letter to John Kerry 1 month ago. And what happened?

Rep. Betty McCollum, wrote a letter, got it signed by 19 other house reps and sent it off to Secretary of State, John Kerry, one month ago. Nary a peep has been mentioned about what Kerry did when he received it.
In the letter, Ms. McCollum stated:

"Israel’s military detention of Palestinian children is an indefensible abuse of human rights. I hope this letter results in State Department pressure on the Government of Israel to end this systemic abuse immediately.  Palestinian children should be treated exactly the same as Israeli or American children, without the fear that one day soldiers will arrest them, beat them, and lock them away in prison.” 
So what's happened since? What swift action did John Kerry take in response to israel's human rights violations?
Were sanctions on israel imposed? Nope. I will wager this: not a damn thing was done. 
usa is run by people who kowtow to zionist contributors. 
I applaud Betty McCollum and the 19 other democrats:
Blumenauer, Earl (OR-3) Beyer, Don (VA-8) Carson, André (IN-7) Conyers, John (MI-13) Davis, Danny (IL-7) DeFazio, Peter (OR-4) Ellison, Keith (MN-5) Eshoo, Anna G. (CA-18) Grijalva, Raúl M.  (AZ-3) Johnson, Eddie Bernice (TX-30) Johnson, Hank (GA-4) Lee, Barbara (CA-13) McDermott, Jim (WA-7) McGovern, James P. (MA-2) Norton, Eleanor Holmes (DC) Pingree, Chellie  (ME-1) Rush, Bobby (IL-1) Waters, Maxine (CA-43) 

 who signed the letter for their bravery in addressing the issue at all. That was the right thing to do. 
But I am DISGUSTED by our nation's indifference to the plight of the Palestinian people. They are being oppressed by israel. 
USA should be ASHAMED of itself for its lack of human aid to the people of GAZA. They're living in rubble of bombed out homes, hospitals, schools. They have limited access to essentials like WATER.

I started a collection to send them money on gofundme.com and so far have received exactly $0. 
HELP THE PEOPLE OF GAZA
Which is the same amount of 
humanitarian aid the united states have sent.

This is truly one of history's lowest points for humanity.