@LongDesertTrain There is significant opposition and also logistical barriers from property owners, businesses, school administrators, bureaucracies, budget hawks, anti-regulation, etc. Silly to downplay this.
$100B was budgeted in large part to improve IAQ in schools. Many just didn't.
@长期以来，房地产所有者、企业、学校管理者、官僚机构、预算鹰派、反监管等方面都存在巨大的反对意见和后勤障碍。轻描淡写这一点是愚蠢的。
1000亿美元的预算在很大程度上是为了改善学校的室内空气质量。很多人就是没有。