The bill has provisions to prevent officials from manipulating reports on terrorism.
"Even though suicide is a tragedy," Reid said, "it's not a tragedy for Donald Trump."
Democrats have repeatedly embarrassed leadership with surprise amendments.
Democrats will make a new push for anti-discrimination legislation this week.
"Keep your short fingers out of the Nevada housing market,” Rep. Titus said.
Sen. Kirsten Gillibrand says she expects her amendment to get a vote.
Reid knocked GOP leadership over a weekslong summer recess.
Secretary Robert McDonald is facing more backlash from GOP lawmakers.
Sarah Ferris 05/24/16 09:31 AM EDT
Only 10 House Democrats didn't demand an end to probe.
The House will start debate on an appropriations bill.