Idaho Sen. Jim Risch has dropped one spot on Roll Call's list of the 50 richest members of Congress - from 15th last year to 16th this year. The Capitol Hill newspaper analyzes congressional financial disclosures, adding up the minimum value reported for assets and subtracting the minimum value listed for liabilities. It reported that Risch is worth $19.78 million, up just half a percent from last year's $19.69 million. Meanwhile, No. 1-ranking Rep. Michael McCaul, R-Texas, saw his wealth balloon by nearly 300 percent to $294.21 million, largely because of the holdings of his heiress wife; McCaul ranked fifth last year. Second-ranked was Rep. Darrell Issa, R-Calif., whose $220.4 million net worth was up 37.7 percent since last year, when he also ranked second. Risch was the only lawmaker from Oregon, Washington or Idaho to make the top-50 richest list; you can see the full report here.