The intent of congress should be clear from the laws they write. If laws are ambiguous the doctrine of contra proferentem should be preferred as it is in contra

The intent of congress should be clear from the laws they write. If laws are ambiguous the doctrine of contra proferentem should be preferred as it is in contract law. In the constitution, congress is tasked with making laws, not "experts" if there is such a thing. If congress wants expert opinion they can invite them to testify and then write the law instead of this end run around legislating.