Hi. I got the email from one of Senator Dole's staff few days after I sent the letter (10/9). Then he sent an email to TSC about my case and got the response on the same day (10/9) saying they (TSC) will look at the case since all the requirements for approval (FP, name check) are in proper places. After that, 20 days have passed (10/29) and I got the approvals (also wife's, daughter's) of both I-140 and I-485.
Hope this helps.