NEW YORK (ETF Expert) -- Price-to-earnings (P/E) ratios have been rising over the course of the four-and-a-half year bull market. It follows that there are fewer and fewer bargains. Indeed, a quick screen at Morningstar reveals a dwindling universe of stocks with torward P/Es that are lower than their respective five year averages.Similarly, Morningstar is relatively stingy when it comes to handing out four or more stars on the ratings of individual securities. Thousands of stocks may be up for consideration. Right now, though, fewer than 200 make the cut. When you combine the two criteria, one sub-sector has a large percentage of its total universe in the mix. Even more striking, this sub-segment that appears to stand apart has been widely covered in the media throughout the government shutdown. The industry? Medical devices and equipment. Equipment makers/suppliers such as Medtronic ( MED), Covidien ( COV), Baxter ( BAX) as well as Abbott Laboratories ( ABT) all showed up in the screening. Their respective prices are quite far from recent highs, in part because of the uproar over the probable implementation of the Affordable Health Care Act's 2.3% tax on medical devices corporations. Nearly all Republicans oppose the unpopular tax, while a large chunk of Democrats want to see the tax removed from the law as well. Democrats, however, want to replace the potential $30 billion in tax revenue before signing off on repealing the medical devices tax. At the moment, few Democrats have indicated they would cross the current party line; that is, until the GOP in the House passes an unencumbered bill to fund government operations, and until the same Republicans agree to raise the debt ceiling without preconditions, there will be no negotiations. Indeed, medical device providers may have to pick up part of the tab for universal health care after all. Regardless, iShares Medical Devices ( ITI) remains in a bona fide uptrend. The exchange-traded asset has received support near a shorter-term, 50-day moving average throughout the year. Moreover, the current price is above both a 50-day as well as a 200-day trendline, sitting not far from an all-time peak.