Caitlin Reilly | (TNS) CQ-Roll Call WASHINGTON — Member turnover on the tax-writing committees and in Congress broadly has given rise to a feeling on and off Capitol Hill that nothing is off the table in next year’s tax deadline negotiations, including provisions made permanent by the 2017 tax law. The effects of this turnover are likely to be felt more deeply in a Republican sweep or divided government next year, as churn has been more dramatic on the GOP side of the dais.