Yes, they never asked. Also, they never asked for the etravel QR code. IIRC, here was the order of which docs were required:
Upon checking in with our airline, they required proof that my Filipina wife's travel tax was paid,
Next was the immigration (emigration)desk: I presented my ECC documents, she presented her CFO documents.
After that, the only document we needed was our passports and the boarding passes.
Flying in to SFO, my wife was really amazed that the US (at least as far as SFO) was so ethnically diverse.
For the first few days she keeps expecting that she is was all just a dream, and that she will wake up back in the Philippines.
I have enjoyed watching her see this great country as a blessing. It really is a refreshing reaction against the backdrop of a perpetually dissatisfied culture.