The House will begin consideration of the $491 billion Defense appropriations bill. A multitude of amendments are expected, so a vote on final passage will not come until Thursday.
The Senate starts at 9:30 a.m. and will spend the day debating a "minibus" spending bill.
Members will also vote on a motion to go to conference with the Senate on the Department of Veterans Affairs reform bills each chamber has passed.
On Tuesday, Senate Veterans Affairs Committee Chairman Bernie SandersBernie SandersSanders on Trump's media attacks: He doesn't understand democracy Drug importation won't save dollars or lives Dems fear divisions will persist after DNC chair election MORE (I-Vt.) said he hopes conferees will be named, who will quickly iron out differences between the two measures.