The fund seeks to maximize current income exempt from federal income tax and capital appreciation. To pursue its goal, the fund normally invests at least 80% of its net assets, plus any borrowings for investment purposes, in municipal bonds that provide income exempt from U.S. federal income tax. The fund invests at least 50% of its net assets in bonds that are rated investment grade (i.e., Baa3/BBB- or higher) at the time of purchase or, if unrated, deemed of comparable quality by the fund's sub-adviser. For additional yield, the fund may invest up to 50% of its net assets in bonds that are rated below investment grade ("high yield" or "junk" bonds) or, if unrated, deemed of comparable quality by the fund's sub-adviser, Insight North America LLC. The fund may invest in individual municipal and taxable bonds of any maturity or duration and does not expect to target any specific range of maturity or duration. Duration is an indication of an investment's "interest rate risk," or how sensitive a bond or the fund's portfolio may be to changes in interest rates. Generally, the longer a bond's duration, the more likely it is to react to interest rate fluctuations and the greater its long-term risk/return potential. The fund’s liquid ETF structure allows investors to buy or sell any time the market is open.Read More