legislators is extremely difficult because legislators, knowing that would be -- it would be unstatisticcal to say that we are adopting this law because it is our religious faith -- don't say that. instead they put forth a whole range of other justifications that are secular and are said to justify the various laws. so, laws, for example, against contraception were defended not on the ground that contraception would be inconsistent with a particular fought but if they were available, then women would be promiscuous and that would undermine the stability of marriages. and therefore was important not to let women engage in sexual behavior with the protection of contraception, and that, therefore no contraception would stabilize marriages. they would put forth the secular justification for laws and this was commandplace and tries with laws against same-sex marriage and that the same-sex couples could not raise children well and so on. so the courts have tended not to invoke the establishment clause as a justification for invalidating laws precisely because they don't want to be in the business