Congress returned to Washington the week of July 13, 2026, facing a crowded legislative schedule while operating with reduced capacity in the Senate. Sen. Lindsey Graham, R-S.C., died July 12 at age 71 from complications related to hardened arteries. Reuters

The Senate reconvened at 3 p.m. Monday with one vote scheduled for 5:30 p.m., while the House met at noon. Senate.gov Clerk of the House

The Vacancy and the Absence

Graham's death leaves South Carolina's junior Senate seat empty. Under state law, Gov. Henry McMaster can appoint a replacement to serve until the next statewide election. NPR McMaster's office had not announced a candidate or timeline as of Monday.

This vacancy arrives at a moment when the Senate Republican majority is already strained. Senate Majority Leader Mitch McConnell, R-Ky., has been hospitalized and unable to return to the chamber since at least July 9. Reuters His office and Senate leadership have not disclosed a return date or the circumstances of his absence.

Together, the vacancy and McConnell's absence effectively reduce Republican voting power by two votes on any party-line measure. This matters most on bills requiring near-unanimous GOP support—like defense authorization and security funding—both of which sit on this session's agenda. NPR

What Happens Next

The Senate's Monday schedule included a recess from 12:30 p.m. to 2:15 p.m. for weekly party lunches. Those sessions are where strategy decisions around McConnell's leadership role and floor tactics tied to the Graham vacancy typically surface before reaching public view. Senate Democrats

Senate Republican leadership had not publicly named an acting floor leader as of Monday, and neither NPR nor Reuters reported how or when the McConnell gap would be filled.

The chamber's original 2026 calendar set a December 18 adjournment date, with the session running from January 5. Senate.gov calendar That calendar was built months ago without accounting for a mid-session vacancy or an extended leadership absence. The formal end date remains unchanged on paper, but what changes is how much floor time exists to pass defense and security bills before then—recess weeks and session weeks were locked in long before these disruptions arose.

For lawmakers counting votes this week, the practical question is less about hitting the December deadline and more about which measures Republican leadership chooses to bring to a floor short two members. Defense authorization bills traditionally need broad support to clear procedural hurdles. A two-vote margin can mean the difference between holding a floor vote now or waiting for a fuller chamber later in the session.