Quick question,

i have a flight in August from CUN-YOW , connecting in IAH and IAD. My flight CUN-IAH arrives at 2:55 and flight from IAH to IAD departs at 4:35, which leads to a connection of 1h 40 min. I will be traveling with my kids aged 7 and 10. We are all Nexus members. Is it enugh time to clear customs and immigration? And would our baggage will ne check up to YOW?