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(a literal px value that does NOT // change when the primary row collapses). The collapsed bar then // simply overlays the content like any fixed header rather than // resizing the document on scroll. Non-toc-bar pages keep using the // live offsetHeight (their masthead height never changes on scroll). if (hasTocBar) { var fullMastheadHeight = parseFloat( getComputedStyle(document.body).getPropertyValue('--wdg-masthead-height') ); document.body.style.paddingTop = (fullMastheadHeight > 0 ? fullMastheadHeight : header.offsetHeight) + 'px'; } else { document.body.style.paddingTop = header.offsetHeight + 'px'; } } updateHeaderState(); // Attach the scroll listener for hero pages (transparent/solid toggle) and // for any page with the in-masthead submenu bar (so it still collapses to // the toc-bar on scroll even though it stays solid). if (isHero || hasTocBar) { window.addEventListener('scroll', updateHeaderState, { passive: true }); // Safety re-sync: a fast/programmatic jump to the top (browser scroll // restoration on back-nav, a "scroll to top" action, anchor jumps, // etc.) can land with coalesced scroll events so the final handler // run reflects a stale position, leaving the logo/transparency out of // sync with the resting scrollY. `scrollend` fires once the scroll has // settled, guaranteeing one final correct update. Harmlessly ignored // by browsers that don't support it. window.addEventListener('scrollend', updateHeaderState, { passive: true }); } window.addEventListener('resize', updateHeaderState); // Marquee + in-masthead TOC: sticky-toc.js dispatches this when the // active TOC item changes so we can flip into / out of the forced // is-solid state immediately on click rather than waiting for the // next scroll/resize. window.addEventListener('wdg:toc-section-change', updateHeaderState); var searchOpenClass = 'is-search-open'; var searchModal = document.getElementById('search-modal'); function openSearchModal() { if (typeof window._searchModalOpen === 'function') { window._searchModalOpen(); } document.querySelectorAll('.js-search-toggle').forEach(function(btn) { btn.classList.add(searchOpenClass); btn.setAttribute('aria-expanded', 'true'); }); } function closeSearchModal() { if (typeof window._searchModalClose === 'function') { window._searchModalClose(); } document.querySelectorAll('.js-search-toggle').forEach(function(btn) { btn.classList.remove(searchOpenClass); btn.setAttribute('aria-expanded', 'false'); }); } document.querySelectorAll('.js-search-toggle').forEach(function(btn) { btn.addEventListener('click', function(e) { e.preventDefault(); if (searchModal && searchModal.classList.contains('is-open')) { closeSearchModal(); } else { openSearchModal(); } }); }); var mobileSearchBtn = document.querySelector('.js-mobile-search-open'); if (mobileSearchBtn) { mobileSearchBtn.addEventListener('click', function(e) { e.preventDefault(); var mobileOverlay = document.getElementById('mobile-menu'); if (mobileOverlay) { mobileOverlay.setAttribute('aria-hidden', 'true'); mobileOverlay.classList.remove('is-open'); } openSearchModal(); }); } function updateAdminBarState() { var ab = document.getElementById('wpadminbar'); if (!ab) return; var rect = ab.getBoundingClientRect(); var hidden = rect.bottom <= 0; document.body.classList.toggle('adminbar-hidden', hidden); } updateAdminBarState(); window.addEventListener('scroll', updateAdminBarState, { passive: true }); window.addEventListener('resize', updateAdminBarState); })();

News

Q&A with Rep. Carol Miller on Tax Certainty

May 12, 2026

51Թ: Rep. Miller, H.R. 1 has been signed into law, preserving the 21% corporate tax rate established by the 2017 Tax Cuts and Jobs Act. As the leader of the House Ways and Means Supply Chain Tax Team leading up to the bill’s passage, what does preserving this rate on a permanent basis mean for …

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Manufacturer Spotlight

51Թ “Forge Your Path” Series: Meet Plantd Co-Founder and CEO Nathan Silvernail

May 6, 2026

Nathan Silvernail is no stranger to launching a bold idea. After seven years at SpaceX helping build the Falcon 9 and Crew Dragon, he took that first-principles mindset and applied it to an entirely different challenge: reinventing how to make one of the world’s most fundamental materials. As co-founder and CEO of

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Q&A with Sen. Lankford on Tax Policy

April 15, 2026

51Թ: Sen. Lankford, H.R. 1 permanently restored 100% bonus depreciation for qualifying property acquired after Jan. 19, 2025, reversing a phasedown that had reduced the deduction to 40% in 2025 and would have eliminated it by 2027. As a member of the Senate Finance Committee, what does permanent full expensing mean for manufacturers making long-lived …

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