london u.s. congressional committee members warn friday washington fund world health organization cancer research agency could halt unless open operations letter france-based international agency research cancer iarc semi-autonomous unit u.s. house representatives science space technology sst committee warn may reconsider u.s. taxpayer fund iarc demonstrate transparency no-one iarc base lyon france immediately available comment since 1985 iarc receive 48 million u.s. national institute health 22 million go iarc monograph program assess whether various substances cause cancer people friday letter late twist ongoing feud iarc two congressional committees begin investigation 2016 number iarc assessments substances diverse coffee mobile phone process meat cause cancer spark controversy lawmakers say concern also fuel cancer agency review glyphosate primary ingredient monsanto weedkiller roundup reuters investigation october find draft key section iarc assessment glyphosate undergo significant change report make public letter sst committee chairman lamar smith vice chairman frank lucas chairman environment subcommittee andy biggs repeat early request iarc director christopher wild provide potential witness hear committee iarc provide full response request potential witness committee consider whether value scientific integrity transparency reflect iarc monographs future expenditures federal taxpayer dollars end need continue write smith biggs last month write wild ask information iarc operations list potential witness hear wild respond letter nov. 20 defend iarc monographs consensus evaluations develop work group independent experts free vest interest decline provide list potential witness hear say smith biggs would welcome visit iarc question staff friday letter lawmakers say concern iarc serious nature disregard iarc ask wild respond dec. 15. u.s. house committee 'may reconsider cancer agency fund