WASHINGTON — Congressional lawmakers will straggle into the Capitol this week for the last legislative days before their long summer recess, crunch time in past Congresses but a sleepy time for the underachieving 113th.

The last week before the August recess is usually full of late nights, last-minute deal-making and achievements to take home to constituents. This week, the House will not even show up until Tuesday evening.

The most pressing business is student loans. Congress is likely to give final approval to legislation that ties student loan interest rates to the market-set rate of Treasury bonds, lowering interest rates at least in the short term.

But the House’s marquee moment before adjourning until Sept. 9 will come on Friday with its 40th vote to cripple President Obama’s health care law. House members preparing their vacation plans have been assured that the last vote will be no later than 3 p.m.