Yes, land can rise and fall based on tectonics or compression/decompression by massive glaciation. The great lakes are an example where the crust was compressed by the massive mile high glacier that covered the area and since the retreat of the glacier the land has been rising (decompressing) albeit very slowly. Glaciers are still one of the primary reasons for lowered sea/water levels because the water increasingly becomes bound up as ice as the glacier grows.
The change in sea level from the advance or retreat of glaciers is so minimal the change in sea level would be unmeasurable.
Now, if you could get ALL the ice/glaciers everywhere on the planet to melt all at the same time, then you could cause a measurable change. Since that would only happen if we moved the Earth a whole bunch closer to the Sun.....
Let me ask you this. Are sea levels currently RISING or FALLING ?