This seems a bit of a non-issue to me. How many mothers of breast-fed babies are travelling without their children while still breastfeeding? Then, of that number, how many are away for a sufficient length of time that they need to bring the expressed milk back with them rather than expressing and disposing of the milk? Your petition seems to suggest that babies need 1 litre a day but that expressing may take five days to produce that amount, so you could be away for up to four days (approx) and still be able to bring back, say, 6 100ml bottles of milk with you without problem? So the issue then only applies to breastfeeding mothers who are travelling without children for 3 or more days? And of that number it really only affects those who are going to be travelling frequently enough during that breastfeeding period that they won't have time to express enough on their return home to get them through the next business trip? So we're surely down to a very small number then?
Or am I missing something really obvious?
I know you said you don't have a choice about these trips but it seems that this one of the many compromises that you are going to have make as a parent - if you are travelling internationally frequently and for more than an overnight trip, then you may have to accept doing some mixed feeding with your baby?