Pressure is mounting from the White House on Senate Republicans to confirm Mike Waltz this week as United Nations ambassador, a long-stalled nominee who is among dozens that must be reconsidered by committees over a chamber rules snafu with Democrats.

Amid a broader political fight with Republicans over changing Senate rules to fast-track President Donald Trump’s nominees, Democrats forced GOP leadership to send dozens of lower-level picks back to relevant committees for approval due to proxy or voice votes, rendering Waltz and others “not properly reported” to the full chamber.